I don't know exactly, but it looks like you (didn't apply)/(failed to succesfully install) any UXTheme patch or any other MSStyles-based theming program.

I recommend you to download the latest Neowin UXTheme Patcher (it works great!) and after that restart your computer when it asks you to do so.
After that, try to double-click it again and it will load in the list.

(since it's placed in the right place by looking at your screenshot)