[svn r17836] Fixing validation in SVN#17707

main/inc/global.inc.php

@@ -486,8 +486,9 @@ $langpath = api_get_path(SYS_CODE_PATH).'lang/';
 if (is_array($language_files)) {
 	foreach($language_files as $index => $language_file) {		
 		include($langpath.'english/'.$language_file.'.inc.php');
-		if (($language_interface)!='false') {
+		$langfile = $langpath.$language_interface.'/'.$language_file.'.inc.php';
-			include($langpath.$language_interface.'/'.$language_file.'.inc.php');
+		if (file_exists($langfile)) {
+			include($langfile);
 		}
 	}
 }