After update to 4.4.4 it is not possible to create a new club any more. The error in system logs:
Error: Access to undeclared static property: IPS\Member\Club::$checkPostsPerDay (0)
#0 /var/www/virt/v4/htdocs/system/Helpers/Form/Node.php(364): IPS\Node\_Model->can('add')
#1 /var/www/virt/v4/htdocs/system/Helpers/Form/Node.php(225): IPS\Helpers\Form\_Node->_populate(Array, NULL, 0, Object(IPS\clubcats\Categories), Array, 3, NULL, false, 100, 2)
#2 /var/www/virt/v4/htdocs/system/Helpers/Form/FormAbstract.php(265): IPS\Helpers\Form\_Node->html()
#3 /var/www/virt/v4/htdocs/system/Helpers/Form/Form.php(483): IPS\Helpers\Form\_FormAbstract->rowHtml(Object(IPS\Helpers\Form))
#4 /var/www/virt/v4/htdocs/applications/core/modules/front/clubs/directory.php(376): IPS\Helpers\_Form->customTemplate(Array)
#5 /var/www/virt/v4/htdocs/system/Dispatcher/Controller.php(85): IPS\core\modules\front\clubs\_directory->create()
#6 /var/www/virt/v4/htdocs/applications/core/modules/front/clubs/directory.php(52): IPS\Dispatcher\_Controller->execute()
#7 /var/www/virt/v4/htdocs/system/Dispatcher/Dispatcher.php(152): IPS\core\modules\front\clubs\_directory->execute()
#8 /var/www/virt/v4/htdocs/index.php(13): IPS\_Dispatcher->run()
#9 {main}
The error disappears when Club Categories is disabled.