Thread:Project:Support desk/wfLoadExtensionMessages() removed from 1.21.1?/reply (13)

Better to insert the following line function wfLoadExtensionMessages{ }

in the LocalSettings.php after the line require_once( "$IP/extensions/WikiSync/WikiSync.php" );

In this way you will not need to edit the source of the Extension. Also, if in future you get PHP error "duplicate function wfLoadExtensionMessages ..." (or so) after you install another Extension, you will know that you cannot use both or make another remedy.