diff --git a/framework/yii/console/controllers/AssetController.php b/framework/yii/console/controllers/AssetController.php
index 8e3de29..0d09570 100644
--- a/framework/yii/console/controllers/AssetController.php
+++ b/framework/yii/console/controllers/AssetController.php
@@ -159,7 +159,7 @@ class AssetController extends Controller
 			}
 		}
 
-		$this->getAssetManager(); // check asset manager configuration
+		$this->getAssetManager(); // check asset manager configuration is correct
 	}
 
 	/**
@@ -420,7 +420,7 @@ class AssetController extends Controller
 		}
 		$array = var_export($array, true);
 		$version = date('Y-m-d H:i:s', time());
-		$bytesWritten = file_put_contents($bundleFile, <<<EOD
+		$bundleFileContent = <<<EOD
 <?php
 /**
  * This file is generated by the "yii script" command.
@@ -428,9 +428,8 @@ class AssetController extends Controller
  * @version $version
  */
 return $array;
-EOD
-		);
-		if ($bytesWritten <= 0) {
+EOD;
+		if (!file_put_contents($bundleFile, $bundleFileContent)) {
 			throw new Exception("Unable to write output bundle configuration at '{$bundleFile}'.");
 		}
 		echo "Output bundle configuration created at '{$bundleFile}'.\n";
@@ -498,6 +497,7 @@ EOD
 	 * Combines Java Script files into a single one.
 	 * @param array $inputFiles source file names.
 	 * @param string $outputFile output file name.
+	 * @throws \yii\console\Exception on failure.
 	 */
 	public function combineJsFiles($inputFiles, $outputFile)
 	{
@@ -507,13 +507,16 @@ EOD
 				. file_get_contents($file)
 				. "/*** END FILE: $file ***/\n";
 		}
-		file_put_contents($outputFile, $content);
+		if (!file_put_contents($outputFile, $content)) {
+			throw new Exception("Unable to write output Java Script file '{$outputFile}'.");
+		}
 	}
 
 	/**
 	 * Combines CSS files into a single one.
 	 * @param array $inputFiles source file names.
 	 * @param string $outputFile output file name.
+	 * @throws \yii\console\Exception on failure.
 	 */
 	public function combineCssFiles($inputFiles, $outputFile)
 	{
@@ -523,7 +526,9 @@ EOD
 				. $this->adjustCssUrl(file_get_contents($file), dirname($file), dirname($outputFile))
 				. "/*** END FILE: $file ***/\n";
 		}
-		file_put_contents($outputFile, $content);
+		if (!file_put_contents($outputFile, $content)) {
+			throw new Exception("Unable to write output CSS file '{$outputFile}'.");
+		}
 	}
 
 	/**
@@ -590,6 +595,7 @@ EOD
 	/**
 	 * Creates template of configuration file for [[actionCompress]].
 	 * @param string $configFile output file name.
+	 * @throws \yii\console\Exception on failure.
 	 */
 	public function actionTemplate($configFile)
 	{
@@ -622,9 +628,8 @@ EOD;
 				return;
 			}
 		}
-		$bytesWritten = file_put_contents($configFile, $template);
-		if ($bytesWritten<=0) {
-			echo "Error: unable to write file '{$configFile}'!\n\n";
+		if (!file_put_contents($configFile, $template)) {
+			throw new Exception("Unable to write template file '{$configFile}'.");
 		} else {
 			echo "Configuration file template created at '{$configFile}'.\n\n";
 		}