Premissions problem

So I've got a forum which is only allowed to be seen by a group called "Internal Affairs", and in the premissions, it has all of it ticked in.
When a guy which is a memeber of Internal Affairs tries to view the page, this message pops up for him:
Xenforo - Error You do not have permission to view this page or perform this action.


XenForo moderator
Staff member
Use the analyse permissions function to determine where the final permission set is coming from.