Index: typo3/mod/tools/em/class.em_index.php
===================================================================
--- typo3/mod/tools/em/class.em_index.php	(révision 4592)
+++ typo3/mod/tools/em/class.em_index.php	(copie de travail)
@@ -3139,8 +3139,9 @@
 			$extList = t3lib_div::get_dirs($path);
 			if (is_array($extList))	{
 				foreach($extList as $extKey)	{
-					if (@is_file($path.$extKey.'/ext_emconf.php'))	{
-						$emConf = $this->includeEMCONF($path.$extKey.'/ext_emconf.php', $extKey);
+					$filename = $path.$extKey.'/ext_emconf.php';
+					if (@is_file($filename))	{
+						$emConf = $this->includeEMCONF($filename, $extKey);
 						if (is_array($emConf))	{
 							if (is_array($list[$extKey]))	{
 								$list[$extKey]=array('doubleInstall'=>$list[$extKey]['doubleInstall']);
@@ -3152,6 +3153,10 @@
 
 							$this->setCat($cat,$list[$extKey], $extKey);
 						}
+					} else {
+						if ($extKey != '.svn' && $extKey != 'CVS')	{
+							debug ($filename, $filename.' not found.', __LINE__, __FILE__);
+						}
 					}
 				}
 			}
@@ -5251,7 +5256,7 @@
 	 * @return	array		EMconf array values.
 	 */
 	function includeEMCONF($path,$_EXTKEY)	{
-		@include($path);
+		include($path);
 		if(is_array($EM_CONF[$_EXTKEY])) {
 			return $this->fixEMCONF($EM_CONF[$_EXTKEY]);
 		}
Index: t3lib/class.t3lib_extmgm.php
===================================================================
--- t3lib/class.t3lib_extmgm.php	(révision 4592)
+++ t3lib/class.t3lib_extmgm.php	(copie de travail)
@@ -135,6 +135,23 @@
 	}
 
 	/**
+	 * Displays an error message if the SYS displayErrors is > 0. Call this before every die function to inform about the reason.
+	 *
+	 * @param	string		error info
+	 * @return	void
+	 */
+	function displayErrors($errortext='')	{
+		$displayErrors = (isset($GLOBALS['TYPO3_CONF_VARS']['SYS']['displayErrors']) ? $GLOBALS['TYPO3_CONF_VARS']['SYS']['displayErrors'] : 0);
+		if ($displayErrors > 0)	{
+			if ($errortext != '')	{
+				t3lib_div::debug(array('error message:' => $errortext));
+			}
+			$tmp = debug_backtrace();
+			t3lib_div::debug($tmp);
+		}
+	}
+
+	/**
 	 * Returns the absolute path to the extension with extension key $key
 	 * If the extension is not loaded the function will die with an error message
 	 * Useful for internal fileoperations
@@ -147,8 +164,9 @@
 	public static function extPath($key, $script = '') {
 		global $TYPO3_LOADED_EXT;
 		if (!isset($TYPO3_LOADED_EXT[$key])) {
-			#debug(array(debug_backtrace()));
-			die('TYPO3 Fatal Error: Extension key "'.$key.'" was NOT loaded! (t3lib_extMgm::extPath)');
+			$errorText = 'TYPO3 Fatal Error: Extension key "'.$key.'" was NOT loaded! (t3lib_extMgm::extPath)';
+			t3lib_extMgm::displayErrors($errorText);
+			die($errorText);
 		}
 		return PATH_site.$TYPO3_LOADED_EXT[$key]['siteRelPath'].$script;
 	}
@@ -165,7 +183,9 @@
 	public static function extRelPath($key) {
 		global $TYPO3_LOADED_EXT;
 		if (!isset($TYPO3_LOADED_EXT[$key])) {
-			die('TYPO3 Fatal Error: Extension key "'.$key.'" was NOT loaded! (t3lib_extMgm::extRelPath)');
+			$errorText = 'TYPO3 Fatal Error: Extension key "'.$key.'" was NOT loaded! (t3lib_extMgm::extRelPath)';
+			t3lib_extMgm::displayErrors($errorText);
+			die($errorText);
 		}
 		return $TYPO3_LOADED_EXT[$key]['typo3RelPath'];
 	}