No, I'm using the exact same set up (except I turned the Experience Bar on until I hit 80). The only problem right now is that Pitbull does not have a working interface for the Rune Bar so it defaults to the top left corner of your screen (where the default rune bar would be if you were using the default Blizzard frames). There's no ETA on getting this fixed either. In the meantime I've been using Magic Runes : WoWInterface Downloads : Death Knight, but I hate it frankly. I just found RuneMover : WoWInterface Downloads : Death Knight today and I'm going to test that out and see if I can get the default bar moved back.

