Beelzehbub

I recently re-installed Skyrim along with Dawnguard, and then went through STEP to get it looking and sounding all pretty again. I got this issue with my UI, and I can't work out what is causing it. I haven't installed anything I didn't have before so I can only assume there are compatibility problems with Dawnguard. Any help would be appreciated. Edited to use img tags so it can be viewed in page. -stoppingby4now