I had to deactivate your plugin, it was comflicting with Group Collaboration From Kevin.
Here is the error:
Sorry, there is a problem
Something went wrong. Please try again.
Error code: EX0
This error was probably caused by application Groups and Clans.
If the issue persists, disable it and contact the author for further assistance.
Error: Call to undefined method IPS\Theme\hook1724_tmp::hookData() (0)
#0 /var/www/html/devclub/system/Theme/Theme.php(749): IPS\_Theme->compileTemplates('core', 'front', 'tables')
#1 [internal function]: IPS\_Theme->getTemplate('tables', 'core', 'front')
#2 /var/www/html/devclub/init.php(448) : eval()'d code(20): call_user_func('parent::getTemp...', 'tables', 'core', NULL)
#3 /var/www/html/devclub/system/Helpers/Table/Table.php(276): IPS\collab_hook_ipsTheme->getTemplate('tables', 'core')
#4 /var/www/html/devclub/system/Helpers/Table/Content.php(132): IPS\Helpers\Table\_Table->__construct(Object(IPS\Http\Url\Friendly))
#5 /var/www/html/devclub/applications/collab/modules/front/collab/categories.php(109): IPS\Helpers\Table\_Content->__construct('IPS\\collab\\Coll...', Object(IPS\Http\Url\Friendly), NULL, Object(IPS\collab\Category), NULL, NULL)
#6 /var/www/html/devclub/applications/collab/modules/front/collab/categories.php(53): IPS\collab\modules\front\collab\_categories->_category(Object(IPS\collab\Category))
#7 /var/www/html/devclub/system/Dispatcher/Controller.php(97): IPS\collab\modules\front\collab\_categories->manage()
#8 /var/www/html/devclub/applications/collab/modules/front/collab/categories.php(25): IPS\Dispatcher\_Controller->execute()
#9 /var/www/html/devclub/system/Dispatcher/Dispatcher.php(143): IPS\collab\modules\front\collab\_categories->execute()
#10 /var/www/html/devclub/index.php(13): IPS\_Dispatcher->run()
#11 {main}
When I deacticate your plugin Group works again.