Thread:Extension talk:MassMessage/Stops Wiki Version 1.22.6

After trying to install, copying the required files to the directory MassMessage and changing the LocalSetting.php my Wiki at www.rockinberlin.de stopped working completely! Parameters: $wgAllowGlobalMessaging = true; $wgMassMessageAccountUsername = 'Admin'; $wgNamespacesToPostIn = array( NS_PROJECT ); require_once( "$IP/extensions/MassMessage/MassMessage.php;
 * 1) Extension  MassMessage einschalten

Any Idea? Or is there a site to see an example of the extension working?