I assume that this is the last mod, you have installed? So this may be a problem with a double entry in the acl_options table, which I had too sometime ago. The effect was, that always the last added mod acl options did not work. This happens if you execute some install scripts more than once.
You can list all the entries you have with
Code: Select all
SELECT * FROM `phpbb_acl_options` WHERE 1 order by `auth_option`
and check if any there are entries that are twice in there. You then can delete one of the double entries and it should work, but be careful and make a backup before playing with the database or better, test this on a local copy of your board.