Index: branches/5.3.x/core/install/install_toolkit.php
===================================================================
diff -u -N -r15483 -r15584
--- branches/5.3.x/core/install/install_toolkit.php	(.../install_toolkit.php)	(revision 15483)
+++ branches/5.3.x/core/install/install_toolkit.php	(.../install_toolkit.php)	(revision 15584)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: install_toolkit.php 15421 2012-06-29 13:06:20Z alex $
+* @version	$Id: install_toolkit.php 15584 2012-10-17 10:50:12Z alex $
 * @package	In-Portal
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -438,7 +438,11 @@
 			$language_import_helper = $this->Application->recallObject('LanguageImportHelper');
 			/* @var $language_import_helper LanguageImportHelper */
 
-			$language_import_helper->performImport($lang_file, '|0|1|2|', '', $upgrade ? LANG_SKIP_EXISTING : LANG_OVERWRITE_EXISTING);
+			if ( !$upgrade ) {
+				$language_import_helper->setOption(LanguageImportHelper::OVERWRITE_EXISTING);
+			}
+
+			$language_import_helper->performImport($lang_file, '|0|1|2|', '');
 		}
 
 		/**