I am having the same problem with Valthume's puzzle door. You know when the rings turn but the door will not open. I have also encountered the issue of Erandur disappearing when I follow him into the nightfall tower or whatever its called in Dawnstar to stop the dream madness. I was wondering if the patch from last night fixed these issues. Anyone know? And please don't tell me I am doing the puzzle wrong, especially if you do not plan to illustrate how to do it corrcetly afterwards.