Yeah I'm getting the same problems with the new Dev version.
You did download the Dev version didn't you ? Thats the only one that will work in 3.1 wow.
edit: Scratch that .. maybe I should have logged out fully before copying it across .. rofl
Once I logged all the way out of game and then all the way back in the screen seemed to be fine. The hud itself I didn't check yet will do that when I go questing later.