Extension talk:GroupPermissionsManager/CustomTabs

German mediawiki Version 1.25
After I installed the extension, the Wiki stops with this error message: Fatal error: Call to a member function addMessages on a non-object in \extensions\GPManager\GPManager.php on line 50. Please advise.

Regards--&#91;&#91;User:Bmrberlin&#124; Bernd M.&#93;&#93; (talk) 07:01, 20 October 2015 (UTC)