xthreads error

[1master1]

found that the xthread custom field permissions are not synchronizing withe the default mybb permissions.
i had made some forums only viewable for awaiting activation members and they cannot see the threads inside it and had the thread description field installed.
now when they click on the forum name, it is giving the error which is in first post. i tried custom setting the permissions of the xthread field. but didnt worked.