Markarth locked, anybody knows which mod does that?

[Nazzzgul666]

Markarth is locked at master difficulty, i've never been inside. I could imagine it's a bug from one mod or the other but i'm not sure and it might as well be a quest from a mod or so? Does anybody has an idea which mod could do that?

[Player80]

I also had this issue. I just popped up the console, clicked on the door and typed "unlock". It hasn't happened since