Vision not triggering in College of Winterhold quest: Under Saarthal.

I have just found the amulet that lets me blast through the wall in the room that I'm trapped in. Tolfdir walks through the tunnel, and I follow. The vision does not trigger for me and Tolfdir just stands in the room with the sarcophagi. I've tried all the console commands I could find, but nothing seems to be working. Any ideas would be awesome.