I need Knights of the nine(Oblivion) help for PC?

Question

I am in the priory of the nine's basement and it is after my battle with umaril(which I totally destroyed him!) and when ever I try to go back up to the main level of the priory I see a solid stone door with a dimond on it and whenever I try to open it I get a messege saying something about a circular pattern and the dimond opening is the only way to open this door how do I get it open!!!!?????? I have tried everything.

Answer 1

Maybe you need to be wearing the ring that got you into the basement in the first place, but I've never had that happen.

Answer 2

just load the autosave thing, maybe its a glitch