When attempting to compile my C# project, I get the following error:
\'C:\\Documents and Settings\\Dan\\Desktop\\Rowdy Pixel\\Apps\\CleanerMenu\\CleanerMenu\\obj
Looking around, it seems some people resolved this by repairing or reinstalling the .NET SDK. You might want to give that a try.
P.S. I see why you didn't include more of the compiler output, now. Not much to really see there. :)