User.php class User extends AppModel { } UsersController.php } Group.php } GroupsController.php in StackOverflow already googled and found nothing that could help me. always got the error: AclNode :: node () – Could not find Aro node Identified by “Array ([Aro0.model] => User [Aro0.foreign_key] =>)” believe that somehow the ForeignKey of groups is not being set … but I can