Is it a bug, or am I missing something? I have gotten to the monastary, gotten rid of the treacherous abbot (or whatever she was

) and have gotten permision to do the trials. I have gotten rid of my equipment, whasisname says he has opened the doors, but I can't get into the room of stone with all of the switches. The game keeps saying the same thing about not being a lock you can open or simple spells. Have I missed a step?