diff --git a/framework/base/Controller.php b/framework/base/Controller.php
index 15681e8..58deda2 100644
--- a/framework/base/Controller.php
+++ b/framework/base/Controller.php
@@ -177,7 +177,7 @@ class Controller extends Component
 		}
 
 		if ($missing !== array()) {
-			throw new InvalidRequestException(Yii::t('yii:Missing required parameters: {params}', array(
+			throw new InvalidRequestException(Yii::t('yii|Missing required parameters: {params}', array(
 				'{params}' => implode(', ', $missing),
 			)));
 		}
diff --git a/framework/base/Exception.php b/framework/base/Exception.php
index d9cb77a..0088a55 100644
--- a/framework/base/Exception.php
+++ b/framework/base/Exception.php
@@ -22,7 +22,7 @@ class Exception extends \Exception
 	 */
 	public function getName()
 	{
-		return \Yii::t('yii:Exception');
+		return \Yii::t('yii|Exception');
 	}
 }
 
diff --git a/framework/base/HttpException.php b/framework/base/HttpException.php
index e23ff09..a839b06 100644
--- a/framework/base/HttpException.php
+++ b/framework/base/HttpException.php
@@ -104,6 +104,6 @@ class HttpException extends UserException
 		if(isset($httpCodes[$this->statusCode]))
 			return $httpCodes[$this->statusCode];
 		else
-			return \Yii::t('yii:Error');
+			return \Yii::t('yii|Error');
 	}
 }
diff --git a/framework/base/InvalidCallException.php b/framework/base/InvalidCallException.php
index ab9de67..cdd5c6b 100644
--- a/framework/base/InvalidCallException.php
+++ b/framework/base/InvalidCallException.php
@@ -22,7 +22,7 @@ class InvalidCallException extends Exception
 	 */
 	public function getName()
 	{
-		return \Yii::t('yii:Invalid Call');
+		return \Yii::t('yii|Invalid Call');
 	}
 }
 
diff --git a/framework/base/InvalidConfigException.php b/framework/base/InvalidConfigException.php
index 97cdc8e..683b2f4 100644
--- a/framework/base/InvalidConfigException.php
+++ b/framework/base/InvalidConfigException.php
@@ -22,7 +22,7 @@ class InvalidConfigException extends Exception
 	 */
 	public function getName()
 	{
-		return \Yii::t('yii:Invalid Configuration');
+		return \Yii::t('yii|Invalid Configuration');
 	}
 }
 
diff --git a/framework/base/InvalidRequestException.php b/framework/base/InvalidRequestException.php
index 428d008..377abbd 100644
--- a/framework/base/InvalidRequestException.php
+++ b/framework/base/InvalidRequestException.php
@@ -22,7 +22,7 @@ class InvalidRequestException extends UserException
 	 */
 	public function getName()
 	{
-		return \Yii::t('yii:Invalid Request');
+		return \Yii::t('yii|Invalid Request');
 	}
 }
 
diff --git a/framework/base/InvalidRouteException.php b/framework/base/InvalidRouteException.php
index 929221c..74216c5 100644
--- a/framework/base/InvalidRouteException.php
+++ b/framework/base/InvalidRouteException.php
@@ -22,7 +22,7 @@ class InvalidRouteException extends UserException
 	 */
 	public function getName()
 	{
-		return \Yii::t('yii:Invalid Route');
+		return \Yii::t('yii|Invalid Route');
 	}
 }
 
diff --git a/framework/base/NotSupportedException.php b/framework/base/NotSupportedException.php
index b7efed4..f487069 100644
--- a/framework/base/NotSupportedException.php
+++ b/framework/base/NotSupportedException.php
@@ -22,7 +22,7 @@ class NotSupportedException extends Exception
 	 */
 	public function getName()
 	{
-		return \Yii::t('yii:Not Supported');
+		return \Yii::t('yii|Not Supported');
 	}
 }
 
diff --git a/framework/base/SecurityManager.php b/framework/base/SecurityManager.php
index 04be15c..a3fb654 100644
--- a/framework/base/SecurityManager.php
+++ b/framework/base/SecurityManager.php
@@ -79,7 +79,7 @@ class SecurityManager extends Component
 		if (!empty($value)) {
 			$this->_validationKey = $value;
 		} else {
-			throw new CException(Yii::t('yii:SecurityManager.validationKey cannot be empty.'));
+			throw new CException(Yii::t('yii|SecurityManager.validationKey cannot be empty.'));
 		}
 	}
 
@@ -112,7 +112,7 @@ class SecurityManager extends Component
 		if (!empty($value)) {
 			$this->_encryptionKey = $value;
 		} else {
-			throw new CException(Yii::t('yii:SecurityManager.encryptionKey cannot be empty.'));
+			throw new CException(Yii::t('yii|SecurityManager.encryptionKey cannot be empty.'));
 		}
 	}
 
@@ -191,12 +191,12 @@ class SecurityManager extends Component
 			}
 
 			if ($module === false) {
-				throw new CException(Yii::t('yii:Failed to initialize the mcrypt module.'));
+				throw new CException(Yii::t('yii|Failed to initialize the mcrypt module.'));
 			}
 
 			return $module;
 		} else {
-			throw new CException(Yii::t('yii:SecurityManager requires PHP mcrypt extension to be loaded in order to use data encryption feature.'));
+			throw new CException(Yii::t('yii|SecurityManager requires PHP mcrypt extension to be loaded in order to use data encryption feature.'));
 		}
 	}
 
diff --git a/framework/base/UnknownMethodException.php b/framework/base/UnknownMethodException.php
index 0cad676..b46903f 100644
--- a/framework/base/UnknownMethodException.php
+++ b/framework/base/UnknownMethodException.php
@@ -22,7 +22,7 @@ class UnknownMethodException extends Exception
 	 */
 	public function getName()
 	{
-		return \Yii::t('yii:Unknown Method');
+		return \Yii::t('yii|Unknown Method');
 	}
 }
 
diff --git a/framework/base/UnknownPropertyException.php b/framework/base/UnknownPropertyException.php
index a226f84..4cb768d 100644
--- a/framework/base/UnknownPropertyException.php
+++ b/framework/base/UnknownPropertyException.php
@@ -22,7 +22,7 @@ class UnknownPropertyException extends Exception
 	 */
 	public function getName()
 	{
-		return \Yii::t('yii:Unknown Property');
+		return \Yii::t('yii|Unknown Property');
 	}
 }
 
diff --git a/framework/base/UrlManager.php b/framework/base/UrlManager.php
index e90f08f..db6b598 100644
--- a/framework/base/UrlManager.php
+++ b/framework/base/UrlManager.php
@@ -366,7 +366,7 @@ class UrlManager extends Component
 					return isset($_GET[$this->routeVar]) ? $_GET[$this->routeVar] : $r;
 			}
 			if($this->useStrictParsing)
-				throw new HttpException(404,Yii::t('yii:Unable to resolve the request "{route}".',
+				throw new HttpException(404,Yii::t('yii|Unable to resolve the request "{route}".',
 					array('{route}'=>$pathInfo)));
 			else
 				return $pathInfo;
@@ -502,7 +502,7 @@ class UrlManager extends Component
 		if($value===self::PATH_FORMAT || $value===self::GET_FORMAT)
 			$this->_urlFormat=$value;
 		else
-			throw new CException(Yii::t('yii:CUrlManager.UrlFormat must be either "path" or "get".'));
+			throw new CException(Yii::t('yii|CUrlManager.UrlFormat must be either "path" or "get".'));
 	}
 }
 
@@ -685,7 +685,7 @@ class CUrlRule extends CBaseUrlRule
 			$this->routePattern='/^'.strtr($this->route,$tr2).'$/u';
 
 		if(YII_DEBUG && @preg_match($this->pattern,'test')===false)
-			throw new CException(Yii::t('yii:The URL pattern "{pattern}" for route "{route}" is not a valid regular expression.',
+			throw new CException(Yii::t('yii|The URL pattern "{pattern}" for route "{route}" is not a valid regular expression.',
 				array('{route}'=>$route,'{pattern}'=>$pattern)));
 	}
 
diff --git a/framework/console/Application.php b/framework/console/Application.php
index 7a8de43..5b7d190 100644
--- a/framework/console/Application.php
+++ b/framework/console/Application.php
@@ -93,7 +93,7 @@ class Application extends \yii\base\Application
 		if ($request->getIsConsoleRequest()) {
 			return $this->runAction($request->route, $request->params);
 		} else {
-			throw new Exception(\Yii::t('yii:this script must be run from the command line.'));
+			throw new Exception(\Yii::t('yii|this script must be run from the command line.'));
 		}
 	}
 
@@ -112,7 +112,7 @@ class Application extends \yii\base\Application
 		try {
 			return parent::runAction($route, $params);
 		} catch (InvalidRouteException $e) {
-			throw new Exception(\Yii::t('yii:Unknown command "{command}".', array('{command}' => $route)));
+			throw new Exception(\Yii::t('yii|Unknown command "{command}".', array('{command}' => $route)));
 		}
 	}
 
diff --git a/framework/console/Controller.php b/framework/console/Controller.php
index b3e9ff7..ff84a45 100644
--- a/framework/console/Controller.php
+++ b/framework/console/Controller.php
@@ -85,7 +85,7 @@ class Controller extends \yii\base\Controller
 		$args = isset($params[Request::ANONYMOUS_PARAMS]) ? $params[Request::ANONYMOUS_PARAMS] : array();
 		unset($params[Request::ANONYMOUS_PARAMS]);
 		if ($params !== array()) {
-			throw new Exception(Yii::t('yii:Unknown options: {params}', array(
+			throw new Exception(Yii::t('yii|Unknown options: {params}', array(
 				'{params}' => implode(', ', array_keys($params)),
 			)));
 		}
@@ -109,7 +109,7 @@ class Controller extends \yii\base\Controller
 		}
 
 		if ($missing !== array()) {
-			throw new Exception(Yii::t('yii:Missing required arguments: {params}', array(
+			throw new Exception(Yii::t('yii|Missing required arguments: {params}', array(
 				'{params}' => implode(', ', $missing),
 			)));
 		}
diff --git a/framework/console/Exception.php b/framework/console/Exception.php
index 052030b..33a06b7 100644
--- a/framework/console/Exception.php
+++ b/framework/console/Exception.php
@@ -24,7 +24,7 @@ class Exception extends UserException
 	 */
 	public function getName()
 	{
-		return \Yii::t('yii:Error');
+		return \Yii::t('yii|Error');
 	}
 }
 
diff --git a/framework/console/controllers/HelpController.php b/framework/console/controllers/HelpController.php
index 7e2eab9..4a37f3d 100644
--- a/framework/console/controllers/HelpController.php
+++ b/framework/console/controllers/HelpController.php
@@ -57,7 +57,7 @@ class HelpController extends Controller
 		if ($command !== null) {
 			$result = Yii::$application->createController($command);
 			if ($result === false) {
-				throw new Exception(Yii::t('yii:No help for unknown command "{command}".', array(
+				throw new Exception(Yii::t('yii|No help for unknown command "{command}".', array(
 					'{command}' => $command,
 				)));
 			}
@@ -241,7 +241,7 @@ class HelpController extends Controller
 	{
 		$action = $controller->createAction($actionID);
 		if ($action === null) {
-			throw new Exception(Yii::t('yii:No help for unknown sub-command "{command}".', array(
+			throw new Exception(Yii::t('yii|No help for unknown sub-command "{command}".', array(
 				'{command}' => rtrim($controller->getUniqueId() . '/' . $actionID, '/'),
 			)));
 		}
diff --git a/framework/db/Exception.php b/framework/db/Exception.php
index 1c4196f..808dc8f 100644
--- a/framework/db/Exception.php
+++ b/framework/db/Exception.php
@@ -40,6 +40,6 @@ class Exception extends \yii\base\Exception
 	 */
 	public function getName()
 	{
-		return \Yii::t('yii:Database Exception');
+		return \Yii::t('yii|Database Exception');
 	}
 }
\ No newline at end of file
diff --git a/framework/i18n/I18N.php b/framework/i18n/I18N.php
index 99a4e69..2cf118f 100644
--- a/framework/i18n/I18N.php
+++ b/framework/i18n/I18N.php
@@ -13,7 +13,7 @@ class I18N extends Component
 			$language = Yii::$application->language;
 		}
 
-		if (preg_match('/^([\w\-]+):(.*)/', $message, $matches)) {
+		if (preg_match('/^([\w\-\.]+)\|(.*)/', $message, $matches)) {
 			$category = $matches[1];
 			$message = $matches[2];
 		} else {
diff --git a/framework/logging/EmailTarget.php b/framework/logging/EmailTarget.php
index 205cd06..4167b8b 100644
--- a/framework/logging/EmailTarget.php
+++ b/framework/logging/EmailTarget.php
@@ -50,7 +50,7 @@ class EmailTarget extends Target
 			$body .= $this->formatMessage($message);
 		}
 		$body = wordwrap($body, 70);
-		$subject = $this->subject === null ? \Yii::t('yii:Application Log') : $this->subject;
+		$subject = $this->subject === null ? \Yii::t('yii|Application Log') : $this->subject;
 		foreach ($this->emails as $email) {
 			$this->sendEmail($subject, $body, $email, $this->sentFrom, $this->headers);
 		}
diff --git a/framework/logging/ProfileTarget.php b/framework/logging/ProfileTarget.php
index 30a207c..6030669 100644
--- a/framework/logging/ProfileTarget.php
+++ b/framework/logging/ProfileTarget.php
@@ -61,7 +61,7 @@ class CProfileLogRoute extends CWebLogRoute
 		if ($value === 'summary' || $value === 'callstack')
 			$this->_report = $value;
 		else
-			throw new CException(Yii::t('yii:CProfileLogRoute.report "{report}" is invalid. Valid values include "summary" and "callstack".',
+			throw new CException(Yii::t('yii|CProfileLogRoute.report "{report}" is invalid. Valid values include "summary" and "callstack".',
 				array('{report}' => $value)));
 	}
 
@@ -108,7 +108,7 @@ class CProfileLogRoute extends CWebLogRoute
 					$results[$last[4]] = array($token, $delta, count($stack));
 				} else
 				{
-					throw new CException(Yii::t('yii:CProfileLogRoute found a mismatching code block "{token}". Make sure the calls to Yii::beginProfile() and Yii::endProfile() be properly nested.',
+					throw new CException(Yii::t('yii|CProfileLogRoute found a mismatching code block "{token}". Make sure the calls to Yii::beginProfile() and Yii::endProfile() be properly nested.',
 						array('{token}' => $token)));
 				}
 			}
@@ -151,7 +151,7 @@ class CProfileLogRoute extends CWebLogRoute
 					else
 						$results[$token] = array($token, 1, $delta, $delta, $delta);
 				} else
-					throw new CException(Yii::t('yii:CProfileLogRoute found a mismatching code block "{token}". Make sure the calls to Yii::beginProfile() and Yii::endProfile() be properly nested.',
+					throw new CException(Yii::t('yii|CProfileLogRoute found a mismatching code block "{token}". Make sure the calls to Yii::beginProfile() and Yii::endProfile() be properly nested.',
 						array('{token}' => $token)));
 			}
 		}
diff --git a/framework/validators/BooleanValidator.php b/framework/validators/BooleanValidator.php
index a002ba5..acf79be 100644
--- a/framework/validators/BooleanValidator.php
+++ b/framework/validators/BooleanValidator.php
@@ -54,7 +54,7 @@ class BooleanValidator extends Validator
 		}
 		if (!$this->strict && $value != $this->trueValue && $value != $this->falseValue
 				|| $this->strict && $value !== $this->trueValue && $value !== $this->falseValue) {
-			$message = ($this->message !== null) ? $this->message : \Yii::t('yii:{attribute} must be either {true} or {false}.');
+			$message = ($this->message !== null) ? $this->message : \Yii::t('yii|{attribute} must be either {true} or {false}.');
 			$this->addError($object, $attribute, $message, array(
 				'{true}' => $this->trueValue,
 				'{false}' => $this->falseValue,
@@ -70,7 +70,7 @@ class BooleanValidator extends Validator
 	 */
 	public function clientValidateAttribute($object, $attribute)
 	{
-		$message = ($this->message !== null) ? $this->message : \Yii::t('yii:{attribute} must be either {true} or {false}.');
+		$message = ($this->message !== null) ? $this->message : \Yii::t('yii|{attribute} must be either {true} or {false}.');
 		$message = strtr($message, array(
 			'{attribute}' => $object->getAttributeLabel($attribute),
 			'{value}' => $object->$attribute,
diff --git a/framework/validators/CaptchaValidator.php b/framework/validators/CaptchaValidator.php
index e936f63..1b6c303 100644
--- a/framework/validators/CaptchaValidator.php
+++ b/framework/validators/CaptchaValidator.php
@@ -49,7 +49,7 @@ class CaptchaValidator extends Validator
 		}
 		$captcha = $this->getCaptchaAction();
 		if (!$captcha->validate($value, $this->caseSensitive)) {
-			$message = $this->message !== null ? $this->message : \Yii::t('yii:The verification code is incorrect.');
+			$message = $this->message !== null ? $this->message : \Yii::t('yii|The verification code is incorrect.');
 			$this->addError($object, $attribute, $message);
 		}
 	}
@@ -85,7 +85,7 @@ class CaptchaValidator extends Validator
 	public function clientValidateAttribute($object, $attribute)
 	{
 		$captcha = $this->getCaptchaAction();
-		$message = $this->message !== null ? $this->message : \Yii::t('yii:The verification code is incorrect.');
+		$message = $this->message !== null ? $this->message : \Yii::t('yii|The verification code is incorrect.');
 		$message = strtr($message, array(
 			'{attribute}' => $object->getAttributeLabel($attribute),
 			'{value}' => $object->$attribute,
diff --git a/framework/validators/CompareValidator.php b/framework/validators/CompareValidator.php
index 141cb16..027ee98 100644
--- a/framework/validators/CompareValidator.php
+++ b/framework/validators/CompareValidator.php
@@ -96,37 +96,37 @@ class CompareValidator extends Validator
 			case '=':
 			case '==':
 				if (($this->strict && $value !== $compareValue) || (!$this->strict && $value != $compareValue)) {
-					$message = ($this->message !== null) ? $this->message : Yii::t('yii:{attribute} must be repeated exactly.');
+					$message = ($this->message !== null) ? $this->message : Yii::t('yii|{attribute} must be repeated exactly.');
 					$this->addError($object, $attribute, $message, array('{compareAttribute}' => $compareLabel));
 				}
 				break;
 			case '!=':
 				if (($this->strict && $value === $compareValue) || (!$this->strict && $value == $compareValue)) {
-					$message = ($this->message !== null) ? $this->message : Yii::t('yii:{attribute} must not be equal to "{compareValue}".');
+					$message = ($this->message !== null) ? $this->message : Yii::t('yii|{attribute} must not be equal to "{compareValue}".');
 					$this->addError($object, $attribute, $message, array('{compareAttribute}' => $compareLabel, '{compareValue}' => $compareValue));
 				}
 				break;
 			case '>':
 				if ($value <= $compareValue) {
-					$message = ($this->message !== null) ? $this->message : Yii::t('yii:{attribute} must be greater than "{compareValue}".');
+					$message = ($this->message !== null) ? $this->message : Yii::t('yii|{attribute} must be greater than "{compareValue}".');
 					$this->addError($object, $attribute, $message, array('{compareAttribute}' => $compareLabel, '{compareValue}' => $compareValue));
 				}
 				break;
 			case '>=':
 				if ($value < $compareValue) {
-					$message = ($this->message !== null) ? $this->message : Yii::t('yii:{attribute} must be greater than or equal to "{compareValue}".');
+					$message = ($this->message !== null) ? $this->message : Yii::t('yii|{attribute} must be greater than or equal to "{compareValue}".');
 					$this->addError($object, $attribute, $message, array('{compareAttribute}' => $compareLabel, '{compareValue}' => $compareValue));
 				}
 				break;
 			case '<':
 				if ($value >= $compareValue) {
-					$message = ($this->message !== null) ? $this->message : Yii::t('yii:{attribute} must be less than "{compareValue}".');
+					$message = ($this->message !== null) ? $this->message : Yii::t('yii|{attribute} must be less than "{compareValue}".');
 					$this->addError($object, $attribute, $message, array('{compareAttribute}' => $compareLabel, '{compareValue}' => $compareValue));
 				}
 				break;
 			case '<=':
 				if ($value > $compareValue) {
-					$message = ($this->message !== null) ? $this->message : Yii::t('yii:{attribute} must be less than or equal to "{compareValue}".');
+					$message = ($this->message !== null) ? $this->message : Yii::t('yii|{attribute} must be less than or equal to "{compareValue}".');
 					$this->addError($object, $attribute, $message, array('{compareAttribute}' => $compareLabel, '{compareValue}' => $compareValue));
 				}
 				break;
@@ -158,37 +158,37 @@ class CompareValidator extends Validator
 			case '=':
 			case '==':
 				if ($message === null) {
-					$message = Yii::t('yii:{attribute} must be repeated exactly.');
+					$message = Yii::t('yii|{attribute} must be repeated exactly.');
 				}
 				$condition = 'value!=' . $compareValue;
 				break;
 			case '!=':
 				if ($message === null) {
-					$message = Yii::t('yii:{attribute} must not be equal to "{compareValue}".');
+					$message = Yii::t('yii|{attribute} must not be equal to "{compareValue}".');
 				}
 				$condition = 'value==' . $compareValue;
 				break;
 			case '>':
 				if ($message === null) {
-					$message = Yii::t('yii:{attribute} must be greater than "{compareValue}".');
+					$message = Yii::t('yii|{attribute} must be greater than "{compareValue}".');
 				}
 				$condition = 'value<=' . $compareValue;
 				break;
 			case '>=':
 				if ($message === null) {
-					$message = Yii::t('yii:{attribute} must be greater than or equal to "{compareValue}".');
+					$message = Yii::t('yii|{attribute} must be greater than or equal to "{compareValue}".');
 				}
 				$condition = 'value<' . $compareValue;
 				break;
 			case '<':
 				if ($message === null) {
-					$message = Yii::t('yii:{attribute} must be less than "{compareValue}".');
+					$message = Yii::t('yii|{attribute} must be less than "{compareValue}".');
 				}
 				$condition = 'value>=' . $compareValue;
 				break;
 			case '<=':
 				if ($message === null) {
-					$message = Yii::t('yii:{attribute} must be less than or equal to "{compareValue}".');
+					$message = Yii::t('yii|{attribute} must be less than or equal to "{compareValue}".');
 				}
 				$condition = 'value>' . $compareValue;
 				break;
diff --git a/framework/validators/DateValidator.php b/framework/validators/DateValidator.php
index af97a71..020d0ed 100644
--- a/framework/validators/DateValidator.php
+++ b/framework/validators/DateValidator.php
@@ -66,7 +66,7 @@ class DateValidator extends Validator
 		}
 
 		if (!$valid) {
-			$message = ($this->message !== null) ? $this->message : \Yii::t('yii:The format of {attribute} is invalid.');
+			$message = ($this->message !== null) ? $this->message : \Yii::t('yii|The format of {attribute} is invalid.');
 			$this->addError($object, $attribute, $message);
 		}
 	}
diff --git a/framework/validators/EmailValidator.php b/framework/validators/EmailValidator.php
index b78b2da..7bb6bb2 100644
--- a/framework/validators/EmailValidator.php
+++ b/framework/validators/EmailValidator.php
@@ -63,7 +63,7 @@ class EmailValidator extends Validator
 			return;
 		}
 		if (!$this->validateValue($value)) {
-			$message = ($this->message !== null) ? $this->message : \Yii::t('yii:{attribute} is not a valid email address.');
+			$message = ($this->message !== null) ? $this->message : \Yii::t('yii|{attribute} is not a valid email address.');
 			$this->addError($object, $attribute, $message);
 		}
 	}
@@ -100,7 +100,7 @@ class EmailValidator extends Validator
 	 */
 	public function clientValidateAttribute($object, $attribute)
 	{
-		$message = ($this->message !== null) ? $this->message : \Yii::t('yii:{attribute} is not a valid email address.');
+		$message = ($this->message !== null) ? $this->message : \Yii::t('yii|{attribute} is not a valid email address.');
 		$message = strtr($message, array(
 			'{attribute}' => $object->getAttributeLabel($attribute),
 			'{value}' => $object->$attribute,
diff --git a/framework/validators/ExistValidator.php b/framework/validators/ExistValidator.php
index 9d253c9..5f590ba 100644
--- a/framework/validators/ExistValidator.php
+++ b/framework/validators/ExistValidator.php
@@ -68,7 +68,7 @@ class ExistValidator extends Validator
 		$query = $className::find();
 		$query->where(array($column->name => $value));
 		if (!$query->exists()) {
-			$message = ($this->message !== null) ? $this->message : \Yii::t('yii:{attribute} "{value}" is invalid.');
+			$message = ($this->message !== null) ? $this->message : \Yii::t('yii|{attribute} "{value}" is invalid.');
 			$this->addError($object, $attribute, $message);
 		}
 	}
diff --git a/framework/validators/FileValidator.php b/framework/validators/FileValidator.php
index c558b76..bde3a6f 100644
--- a/framework/validators/FileValidator.php
+++ b/framework/validators/FileValidator.php
@@ -115,7 +115,7 @@ class CFileValidator extends Validator
 				return $this->emptyAttribute($object, $attribute);
 			if (count($files) > $this->maxFiles)
 			{
-				$message = $this->tooMany !== null ? $this->tooMany : \Yii::t('yii:{attribute} cannot accept more than {limit} files.');
+				$message = $this->tooMany !== null ? $this->tooMany : \Yii::t('yii|{attribute} cannot accept more than {limit} files.');
 				$this->addError($object, $attribute, $message, array('{attribute}' => $attribute, '{limit}' => $this->maxFiles));
 			} else
 				foreach ($files as $file)
@@ -145,20 +145,20 @@ class CFileValidator extends Validator
 			return $this->emptyAttribute($object, $attribute);
 		elseif ($error == UPLOAD_ERR_INI_SIZE || $error == UPLOAD_ERR_FORM_SIZE || $this->maxSize !== null && $file->getSize() > $this->maxSize)
 		{
-			$message = $this->tooLarge !== null ? $this->tooLarge : \Yii::t('yii:The file "{file}" is too large. Its size cannot exceed {limit} bytes.');
+			$message = $this->tooLarge !== null ? $this->tooLarge : \Yii::t('yii|The file "{file}" is too large. Its size cannot exceed {limit} bytes.');
 			$this->addError($object, $attribute, $message, array('{file}' => $file->getName(), '{limit}' => $this->getSizeLimit()));
 		} elseif ($error == UPLOAD_ERR_PARTIAL)
-			throw new CException(\Yii::t('yii:The file "{file}" was only partially uploaded.', array('{file}' => $file->getName())));
+			throw new CException(\Yii::t('yii|The file "{file}" was only partially uploaded.', array('{file}' => $file->getName())));
 		elseif ($error == UPLOAD_ERR_NO_TMP_DIR)
-			throw new CException(\Yii::t('yii:Missing the temporary folder to store the uploaded file "{file}".', array('{file}' => $file->getName())));
+			throw new CException(\Yii::t('yii|Missing the temporary folder to store the uploaded file "{file}".', array('{file}' => $file->getName())));
 		elseif ($error == UPLOAD_ERR_CANT_WRITE)
-			throw new CException(\Yii::t('yii:Failed to write the uploaded file "{file}" to disk.', array('{file}' => $file->getName())));
+			throw new CException(\Yii::t('yii|Failed to write the uploaded file "{file}" to disk.', array('{file}' => $file->getName())));
 		elseif (defined('UPLOAD_ERR_EXTENSION') && $error == UPLOAD_ERR_EXTENSION)  // available for PHP 5.2.0 or above
-			throw new CException(\Yii::t('yii:File upload was stopped by extension.'));
+			throw new CException(\Yii::t('yii|File upload was stopped by extension.'));
 
 		if ($this->minSize !== null && $file->getSize() < $this->minSize)
 		{
-			$message = $this->tooSmall !== null ? $this->tooSmall : \Yii::t('yii:The file "{file}" is too small. Its size cannot be smaller than {limit} bytes.');
+			$message = $this->tooSmall !== null ? $this->tooSmall : \Yii::t('yii|The file "{file}" is too small. Its size cannot be smaller than {limit} bytes.');
 			$this->addError($object, $attribute, $message, array('{file}' => $file->getName(), '{limit}' => $this->minSize));
 		}
 
@@ -170,7 +170,7 @@ class CFileValidator extends Validator
 				$types = $this->types;
 			if (!in_array(strtolower($file->getExtensionName()), $types))
 			{
-				$message = $this->wrongType !== null ? $this->wrongType : \Yii::t('yii:The file "{file}" cannot be uploaded. Only files with these extensions are allowed: {extensions}.');
+				$message = $this->wrongType !== null ? $this->wrongType : \Yii::t('yii|The file "{file}" cannot be uploaded. Only files with these extensions are allowed: {extensions}.');
 				$this->addError($object, $attribute, $message, array('{file}' => $file->getName(), '{extensions}' => implode(', ', $types)));
 			}
 		}
@@ -185,7 +185,7 @@ class CFileValidator extends Validator
 	{
 		if (!$this->allowEmpty)
 		{
-			$message = $this->message !== null ? $this->message : \Yii::t('yii:{attribute} cannot be blank.');
+			$message = $this->message !== null ? $this->message : \Yii::t('yii|{attribute} cannot be blank.');
 			$this->addError($object, $attribute, $message);
 		}
 	}
diff --git a/framework/validators/NumberValidator.php b/framework/validators/NumberValidator.php
index d459fb8..5ca40c6 100644
--- a/framework/validators/NumberValidator.php
+++ b/framework/validators/NumberValidator.php
@@ -73,21 +73,21 @@ class NumberValidator extends Validator
 		}
 		if ($this->integerOnly) {
 			if (!preg_match($this->integerPattern, "$value")) {
-				$message = $this->message !== null ? $this->message : Yii::t('yii:{attribute} must be an integer.');
+				$message = $this->message !== null ? $this->message : Yii::t('yii|{attribute} must be an integer.');
 				$this->addError($object, $attribute, $message);
 			}
 		} else {
 			if (!preg_match($this->numberPattern, "$value")) {
-				$message = $this->message !== null ? $this->message : Yii::t('yii:{attribute} must be a number.');
+				$message = $this->message !== null ? $this->message : Yii::t('yii|{attribute} must be a number.');
 				$this->addError($object, $attribute, $message);
 			}
 		}
 		if ($this->min !== null && $value < $this->min) {
-			$message = $this->tooSmall !== null ? $this->tooSmall : Yii::t('yii:{attribute} is too small (minimum is {min}).');
+			$message = $this->tooSmall !== null ? $this->tooSmall : Yii::t('yii|{attribute} is too small (minimum is {min}).');
 			$this->addError($object, $attribute, $message, array('{min}' => $this->min));
 		}
 		if ($this->max !== null && $value > $this->max) {
-			$message = $this->tooBig !== null ? $this->tooBig : Yii::t('yii:{attribute} is too big (maximum is {max}).');
+			$message = $this->tooBig !== null ? $this->tooBig : Yii::t('yii|{attribute} is too big (maximum is {max}).');
 			$this->addError($object, $attribute, $message, array('{max}' => $this->max));
 		}
 	}
@@ -103,8 +103,8 @@ class NumberValidator extends Validator
 		$label = $object->getAttributeLabel($attribute);
 
 		if (($message = $this->message) === null) {
-			$message = $this->integerOnly ? Yii::t('yii:{attribute} must be an integer.')
-					: Yii::t('yii:{attribute} must be a number.');
+			$message = $this->integerOnly ? Yii::t('yii|{attribute} must be an integer.')
+					: Yii::t('yii|{attribute} must be a number.');
 		}
 		$message = strtr($message, array(
 			'{attribute}' => $label,
@@ -118,7 +118,7 @@ if(!value.match($pattern)) {
 ";
 		if ($this->min !== null) {
 			if (($tooSmall = $this->tooSmall) === null) {
-				$tooSmall = Yii::t('yii:{attribute} is too small (minimum is {min}).');
+				$tooSmall = Yii::t('yii|{attribute} is too small (minimum is {min}).');
 			}
 			$tooSmall = strtr($tooSmall, array(
 				'{attribute}' => $label,
@@ -133,7 +133,7 @@ if(value<{$this->min}) {
 		}
 		if ($this->max !== null) {
 			if (($tooBig = $this->tooBig) === null) {
-				$tooBig = Yii::t('yii:{attribute} is too big (maximum is {max}).');
+				$tooBig = Yii::t('yii|{attribute} is too big (maximum is {max}).');
 			}
 			$tooBig = strtr($tooBig, array(
 				'{attribute}' => $label,
diff --git a/framework/validators/RangeValidator.php b/framework/validators/RangeValidator.php
index 6abf81f..9119eef 100644
--- a/framework/validators/RangeValidator.php
+++ b/framework/validators/RangeValidator.php
@@ -58,10 +58,10 @@ class RangeValidator extends Validator
 			throw new InvalidConfigException('The "range" property must be specified as an array.');
 		}
 		if (!$this->not && !in_array($value, $this->range, $this->strict)) {
-			$message = ($this->message !== null) ? $this->message : \Yii::t('yii:{attribute} should be in the list.');
+			$message = ($this->message !== null) ? $this->message : \Yii::t('yii|{attribute} should be in the list.');
 			$this->addError($object, $attribute, $message);
 		} elseif ($this->not && in_array($value, $this->range, $this->strict)) {
-			$message = ($this->message !== null) ? $this->message : \Yii::t('yii:{attribute} should NOT be in the list.');
+			$message = ($this->message !== null) ? $this->message : \Yii::t('yii|{attribute} should NOT be in the list.');
 			$this->addError($object, $attribute, $message);
 		}
 	}
@@ -80,7 +80,7 @@ class RangeValidator extends Validator
 		}
 
 		if (($message = $this->message) === null) {
-			$message = $this->not ? \Yii::t('yii:{attribute} should NOT be in the list.') : \Yii::t('yii:{attribute} should be in the list.');
+			$message = $this->not ? \Yii::t('yii|{attribute} should NOT be in the list.') : \Yii::t('yii|{attribute} should be in the list.');
 		}
 		$message = strtr($message, array(
 			'{attribute}' => $object->getAttributeLabel($attribute),
diff --git a/framework/validators/RegularExpressionValidator.php b/framework/validators/RegularExpressionValidator.php
index 1e034f7..456b01e 100644
--- a/framework/validators/RegularExpressionValidator.php
+++ b/framework/validators/RegularExpressionValidator.php
@@ -51,7 +51,7 @@ class RegularExpressionValidator extends Validator
 			throw new \yii\base\Exception('The "pattern" property must be specified with a valid regular expression.');
 		}
 		if ((!$this->not && !preg_match($this->pattern, $value)) || ($this->not && preg_match($this->pattern, $value))) {
-			$message = ($this->message !== null) ? $this->message : \Yii::t('yii:{attribute} is invalid.');
+			$message = ($this->message !== null) ? $this->message : \Yii::t('yii|{attribute} is invalid.');
 			$this->addError($object, $attribute, $message);
 		}
 	}
@@ -69,7 +69,7 @@ class RegularExpressionValidator extends Validator
 			throw new \yii\base\Exception('The "pattern" property must be specified with a valid regular expression.');
 		}
 
-		$message = ($this->message !== null) ? $this->message : \Yii::t('yii:{attribute} is invalid.');
+		$message = ($this->message !== null) ? $this->message : \Yii::t('yii|{attribute} is invalid.');
 		$message = strtr($message, array(
 			'{attribute}' => $object->getAttributeLabel($attribute),
 			'{value}' => $object->$attribute,
diff --git a/framework/validators/RequiredValidator.php b/framework/validators/RequiredValidator.php
index af03221..a80733d 100644
--- a/framework/validators/RequiredValidator.php
+++ b/framework/validators/RequiredValidator.php
@@ -47,12 +47,12 @@ class RequiredValidator extends Validator
 		$value = $object->$attribute;
 		if ($this->requiredValue === null) {
 			if ($this->strict && $value === null || !$this->strict && $this->isEmpty($value, true)) {
-				$message = ($this->message !== null) ? $this->message : \Yii::t('yii:{attribute} cannot be blank.');
+				$message = ($this->message !== null) ? $this->message : \Yii::t('yii|{attribute} cannot be blank.');
 				$this->addError($object, $attribute, $message);
 			}
 		} else {
 			if (!$this->strict && $value != $this->requiredValue || $this->strict && $value !== $this->requiredValue) {
-				$message = ($this->message !== null) ? $this->message : \Yii::t('yii:{attribute} must be "{requiredValue}".');
+				$message = ($this->message !== null) ? $this->message : \Yii::t('yii|{attribute} must be "{requiredValue}".');
 				$this->addError($object, $attribute, $message, array(
 					'{requiredValue}' => $this->requiredValue,
 				));
@@ -71,7 +71,7 @@ class RequiredValidator extends Validator
 		$message = $this->message;
 		if ($this->requiredValue !== null) {
 			if ($message === null) {
-				$message = \Yii::t('yii:{attribute} must be "{requiredValue}".');
+				$message = \Yii::t('yii|{attribute} must be "{requiredValue}".');
 			}
 			$message = strtr($message, array(
 				'{attribute}' => $object->getAttributeLabel($attribute),
@@ -85,7 +85,7 @@ if (value != " . json_encode($this->requiredValue) . ") {
 ";
 		} else {
 			if ($message === null) {
-				$message = \Yii::t('yii:{attribute} cannot be blank.');
+				$message = \Yii::t('yii|{attribute} cannot be blank.');
 			}
 			$message = strtr($message, array(
 				'{attribute}' => $object->getAttributeLabel($attribute),
diff --git a/framework/validators/StringValidator.php b/framework/validators/StringValidator.php
index 4db29d3..c57e183 100644
--- a/framework/validators/StringValidator.php
+++ b/framework/validators/StringValidator.php
@@ -76,7 +76,7 @@ class StringValidator extends Validator
 		}
 
 		if (!is_string($value)) {
-			$message = ($this->message !== null) ? $this->message : \Yii::t('yii:{attribute} must be a string.');
+			$message = ($this->message !== null) ? $this->message : \Yii::t('yii|{attribute} must be a string.');
 			$this->addError($object, $attribute, $message);
 			return;
 		}
@@ -88,15 +88,15 @@ class StringValidator extends Validator
 		}
 
 		if ($this->min !== null && $length < $this->min) {
-			$message = ($this->tooShort !== null) ? $this->tooShort : \Yii::t('yii:{attribute} is too short (minimum is {min} characters).');
+			$message = ($this->tooShort !== null) ? $this->tooShort : \Yii::t('yii|{attribute} is too short (minimum is {min} characters).');
 			$this->addError($object, $attribute, $message, array('{min}' => $this->min));
 		}
 		if ($this->max !== null && $length > $this->max) {
-			$message = ($this->tooLong !== null) ? $this->tooLong : \Yii::t('yii:{attribute} is too long (maximum is {max} characters).');
+			$message = ($this->tooLong !== null) ? $this->tooLong : \Yii::t('yii|{attribute} is too long (maximum is {max} characters).');
 			$this->addError($object, $attribute, $message, array('{max}' => $this->max));
 		}
 		if ($this->is !== null && $length !== $this->is) {
-			$message = ($this->notEqual !== null) ? $this->notEqual : \Yii::t('yii:{attribute} is of the wrong length (should be {length} characters).');
+			$message = ($this->notEqual !== null) ? $this->notEqual : \Yii::t('yii|{attribute} is of the wrong length (should be {length} characters).');
 			$this->addError($object, $attribute, $message, array('{length}' => $this->is));
 		}
 	}
@@ -113,7 +113,7 @@ class StringValidator extends Validator
 		$value = $object->$attribute;
 
 		if (($notEqual = $this->notEqual) === null) {
-			$notEqual = \Yii::t('yii:{attribute} is of the wrong length (should be {length} characters).');
+			$notEqual = \Yii::t('yii|{attribute} is of the wrong length (should be {length} characters).');
 		}
 		$notEqual = strtr($notEqual, array(
 			'{attribute}' => $label,
@@ -122,7 +122,7 @@ class StringValidator extends Validator
 		));
 
 		if (($tooShort = $this->tooShort) === null) {
-			$tooShort = \Yii::t('yii:{attribute} is too short (minimum is {min} characters).');
+			$tooShort = \Yii::t('yii|{attribute} is too short (minimum is {min} characters).');
 		}
 		$tooShort = strtr($tooShort, array(
 			'{attribute}' => $label,
@@ -131,7 +131,7 @@ class StringValidator extends Validator
 		));
 
 		if (($tooLong = $this->tooLong) === null) {
-			$tooLong = \Yii::t('yii:{attribute} is too long (maximum is {max} characters).');
+			$tooLong = \Yii::t('yii|{attribute} is too long (maximum is {max} characters).');
 		}
 		$tooLong = strtr($tooLong, array(
 			'{attribute}' => $label,
diff --git a/framework/validators/UniqueValidator.php b/framework/validators/UniqueValidator.php
index 758d44f..5c2ab86 100644
--- a/framework/validators/UniqueValidator.php
+++ b/framework/validators/UniqueValidator.php
@@ -86,7 +86,7 @@ class UniqueValidator extends Validator
 		}
 
 		if ($exists) {
-			$message = $this->message !== null ? $this->message : \Yii::t('yii:{attribute} "{value}" has already been taken.');
+			$message = $this->message !== null ? $this->message : \Yii::t('yii|{attribute} "{value}" has already been taken.');
 			$this->addError($object, $attribute, $message);
 		}
 	}
diff --git a/framework/validators/UrlValidator.php b/framework/validators/UrlValidator.php
index 768e8d4..55d8433 100644
--- a/framework/validators/UrlValidator.php
+++ b/framework/validators/UrlValidator.php
@@ -55,7 +55,7 @@ class UrlValidator extends Validator
 		if (($value = $this->validateValue($value)) !== false) {
 			$object->$attribute = $value;
 		} else {
-			$message = ($this->message !== null) ? $this->message : \Yii::t('yii:{attribute} is not a valid URL.');
+			$message = ($this->message !== null) ? $this->message : \Yii::t('yii|{attribute} is not a valid URL.');
 			$this->addError($object, $attribute, $message);
 		}
 	}
@@ -97,7 +97,7 @@ class UrlValidator extends Validator
 	 */
 	public function clientValidateAttribute($object, $attribute)
 	{
-		$message = ($this->message !== null) ? $this->message : \Yii::t('yii:{attribute} is not a valid URL.');
+		$message = ($this->message !== null) ? $this->message : \Yii::t('yii|{attribute} is not a valid URL.');
 		$message = strtr($message, array(
 			'{attribute}' => $object->getAttributeLabel($attribute),
 			'{value}' => $object->$attribute,
diff --git a/framework/web/AssetManager.php b/framework/web/AssetManager.php
index bf27e6a..1c5965a 100644
--- a/framework/web/AssetManager.php
+++ b/framework/web/AssetManager.php
@@ -113,7 +113,7 @@ class CAssetManager extends CApplicationComponent
 		if(($basePath=realpath($value))!==false && is_dir($basePath) && is_writable($basePath))
 			$this->_basePath=$basePath;
 		else
-			throw new CException(Yii::t('yii:CAssetManager.basePath "{path}" is invalid. Please make sure the directory exists and is writable by the Web server process.',
+			throw new CException(Yii::t('yii|CAssetManager.basePath "{path}" is invalid. Please make sure the directory exists and is writable by the Web server process.',
 				array('{path}'=>$value)));
 	}
 
@@ -236,7 +236,7 @@ class CAssetManager extends CApplicationComponent
 				return $this->_published[$path]=$this->getBaseUrl().'/'.$dir;
 			}
 		}
-		throw new CException(Yii::t('yii:The asset "{asset}" to be published does not exist.',
+		throw new CException(Yii::t('yii|The asset "{asset}" to be published does not exist.',
 			array('{asset}'=>$path)));
 	}
 
diff --git a/framework/web/Controller.php b/framework/web/Controller.php
index e4c36c9..6c0bc28 100644
--- a/framework/web/Controller.php
+++ b/framework/web/Controller.php
@@ -45,7 +45,7 @@ class Controller extends \yii\base\Controller
 	 */
 	public function invalidActionParams($action, $exception)
 	{
-		throw new HttpException(400, \Yii::t('yii:Your request is invalid.'));
+		throw new HttpException(400, \Yii::t('yii|Your request is invalid.'));
 	}
 
 	/**
diff --git a/framework/web/Request.php b/framework/web/Request.php
index 9566974..68d6044 100644
--- a/framework/web/Request.php
+++ b/framework/web/Request.php
@@ -823,7 +823,7 @@ class Request extends \yii\base\Request
 				$valid = false;
 			}
 			if (!$valid) {
-				throw new CHttpException(400, Yii::t('yii:The CSRF token could not be verified.'));
+				throw new CHttpException(400, Yii::t('yii|The CSRF token could not be verified.'));
 			}
 		}
 	}
diff --git a/framework/web/Session.php b/framework/web/Session.php
index 2b23e62..83c7ed9 100644
--- a/framework/web/Session.php
+++ b/framework/web/Session.php
@@ -115,7 +115,7 @@ class CHttpSession extends CApplicationComponent implements IteratorAggregate,Ar
 		@session_start();
 		if(YII_DEBUG && session_id()=='')
 		{
-			$message=Yii::t('yii:Failed to start session.');
+			$message=Yii::t('yii|Failed to start session.');
 			if(function_exists('error_get_last'))
 			{
 				$error=error_get_last();
@@ -215,7 +215,7 @@ class CHttpSession extends CApplicationComponent implements IteratorAggregate,Ar
 		if(is_dir($value))
 			session_save_path($value);
 		else
-			throw new CException(Yii::t('yii:CHttpSession.savePath "{path}" is not a valid directory.',
+			throw new CException(Yii::t('yii|CHttpSession.savePath "{path}" is not a valid directory.',
 				array('{path}'=>$value)));
 	}
 
@@ -280,7 +280,7 @@ class CHttpSession extends CApplicationComponent implements IteratorAggregate,Ar
 			ini_set('session.use_only_cookies','1');
 		}
 		else
-			throw new CException(Yii::t('yii:CHttpSession.cookieMode can only be "none", "allow" or "only".'));
+			throw new CException(Yii::t('yii|CHttpSession.cookieMode can only be "none", "allow" or "only".'));
 	}
 
 	/**
@@ -304,7 +304,7 @@ class CHttpSession extends CApplicationComponent implements IteratorAggregate,Ar
 			ini_set('session.gc_divisor','100');
 		}
 		else
-			throw new CException(Yii::t('yii:CHttpSession.gcProbability "{value}" is invalid. It must be an integer between 0 and 100.',
+			throw new CException(Yii::t('yii|CHttpSession.gcProbability "{value}" is invalid. It must be an integer between 0 and 100.',
 				array('{value}'=>$value)));
 	}