Index: branches/release-33/php/mt.php.pre
===================================================================
--- branches/release-33/php/mt.php.pre (revision 1554)
+++ branches/release-33/php/mt.php.pre (revision 1717)
@@ -349,4 +349,6 @@
         isset($cfg['pluginpath']) or
             $cfg['pluginpath'] = array($this->config('MTDir') . DIRECTORY_SEPARATOR . 'plugins');
+        isset($cfg['timeoffset']) or
+            $cfg['timeoffset'] = '__DEFAULT_TIMEZONE__';
     }