Hi,
i encounter the same problem with the quest "the man who waits": The door in the sanatorium will not open, alltough i allready talked to the statue, that should let me in. If i talk to the statue again, it asks me, what happened down there. Questlog still says, i have to go there and check for the patients. Really annoying bug ;-)
Here is my savegame:
https://www.sendspace.com/file/ok28vv
Looking forward to a quick solution.