diff --git a/classes/Tools.php b/classes/Tools.php
index 1b7ce1d66..2b9310b1d 100644
--- a/classes/Tools.php
+++ b/classes/Tools.php
@@ -776,6 +776,33 @@ class ToolsCore
 	{
 		return (Tools::dieObject($object, $kill));
 	}
+	
+	public static function debug_backtrace($start = 0, $limit = null)
+	{
+		$backtrace = debug_backtrace();
+		array_shift($backtrace);
+		for ($i = 0; $i < $start; ++$i)
+			array_shift($backtrace);
+		
+		echo '
+		<div style="margin:10px;padding:10px;border:1px solid #666666">
+			<ul>';
+		$i = 0;
+		foreach ($backtrace as $id => $trace)
+		{
+			if ((int)$limit && (++$i > $limit ))
+				break;
+			$relative_file = (isset($trace['file'])) ? 'in /'.ltrim(str_replace(array(_PS_ROOT_DIR_, '\\'), array('', '/'), $trace['file']), '/') : '';
+			$current_line = (isset($trace['line'])) ? ':'.$trace['line'] : '';
+
+			echo '<li>
+				<b>'.((isset($trace['class'])) ? $trace['class'] : '').((isset($trace['type'])) ? $trace['type'] : '').$trace['function'].'</b>
+				'.$relative_file.$current_line.'
+			</li>';
+		}
+		echo '</ul>
+		</div>';
+	}
 
 	/**
 	* ALIAS OF dieObject() - Display an error with detailed object but don't stop the execution
diff --git a/classes/exception/PrestaShopException.php b/classes/exception/PrestaShopException.php
index 1476cd612..465bf0ddd 100644
--- a/classes/exception/PrestaShopException.php
+++ b/classes/exception/PrestaShopException.php
@@ -51,7 +51,7 @@ class PrestaShopExceptionCore extends Exception
 			</style>';
 			echo '<div id="psException">';
 			echo '<h2>['.get_class($this).']</h2>';
-			echo $this->getExentedMessage();
+			echo $this->getExtendedMessage();
 
 			$this->displayFileDebug($this->getFile(), $this->getLine());
 
@@ -145,14 +145,23 @@ class PrestaShopExceptionCore extends Exception
 	{
 		$logger = new FileLogger();
 		$logger->setFilename(_PS_ROOT_DIR_.'/log/'.date('Ymd').'_exception.log');
-		$logger->logError($this->getExentedMessage(false));
+		$logger->logError($this->getExtendedMessage(false));
+	}
+	
+	/**
+	 * @deprecated 1.5.5
+	 */
+	protected function getExentedMessage($html = true)
+	{
+		Tools::displayAsDeprecated();
+		return $this->getExtendedMessage($html);
 	}
 	
 	/**
 	 * Return the content of the Exception
 	 * @return string content of the exception
 	 */
-	protected function getExentedMessage($html = true)
+	protected function getExtendedMessage($html = true)
 	{
 		$format = '<p><b>%s</b><br /><i>at line </i><b>%d</b><i> in file </i><b>%s</b></p>';
 		if (!$html)