Ok so after harkon turned me and tells me to talk to that guy and tell him "it is time" i follow him into the main chamber where he talks to other vampires and suddenly they attack me. I think it must be some kind of faction bug or something. I used to be a werewolf but did the witch head cure thing, but I remember reading about how it doesn't remove you from the werewolf faction if you do that, because guards still comment about the hair growing out of your ears or how you smell like a wet dog even after cured. So I'm thinking its a faction bug. Does anyone know a command to remove the player from the werewolf faction, or anything about this bug?
I guess I can start a new character, but I imagine other people will have this bug too.