Dawnguard Issue

So today, 10/5/13, i bought the Dawnguard DLC for Skyrim. I downloaded it fully, loaded the game, talked to a guard aaaaand nothing. I also tried going to the place where the castle should be and there's nothing there. I've tried everything I could find on it and nothing has worked. I do have about 50 mods but I don't think they're to blame. I really need any help I can get.

Are you level 10 or higher?


Did you make sure its loading?

Nevermind, I got it to work.