Hello/Hi/Greetings,

I made the update to 2.8.1 and now I get the following error message by using the "Advanced Menu Manager" plugin. And I can't do any settings.


Notice: Use of undefined constant GPC_PATH - assumed 'GPC_PATH' in /www/htdocs/w00ac953/piwigo/piwigo/plugins/GrumPluginClasses/classes/GPCCore.class.inc.php on line 663



Piwigo version: 2.8.1
PHP version: 5.5.35
MySQL version: 5.6.30
Piwigo URL: http://lotharpost.de/piwigo/piwigo/

Thanks a lot ....
Lothar