.NET Frame Utilization Error
 

I just installed the UI Designer and cannot use it. When I opened it, I got a ".NET Frame Utilization" error. It said: "C:\WINDOWS\Microsoft.NET\Framework\v2.0.5072\mscorwks.dll could not be loaded." I went to that directory, and no v2.0.5072 exists (however, 2.0.50727 does.) I know this problem is very likely caused by my computer, but if you know how I can fix it, I'd be very thankful.

Edit: I just realized that I put this in the wrong forum. It should go in the main forum..
Sorry, I'm a bit tired right now.