I have made myself a simple bar. Everything works as intended if I leave the Orientation setting as right.
If I change the Orientation setting to Down it gives me an error.
Edit: I am using the beta_11 from Git. date 1-23-13
If I log out of the game and back in the bar will render but displays an error behind the frame.
Error compilation UF!
I think that is what it says anyways. Part of the frame is blocking it.