Original Blizz UI displayed over nUI

[AlexSUCF]

The basic UI provided by Blizzard is displaying on top of nUI. Everything works perfectly on my main (Hunter), but when I switched over to my alt (Mage) everything is confuzzled. I attached a screencap of what is going on. The HUD seems to be working when I target something but the double action bars make it difficult to use. Any suggestions?

Edit: All the same addons are active on both toons.