Cannot build a project error unity 3.0

Hi guys, trying to build and run a project but during compilation bet i keep getting this error. My unity 3 installation is in f\program files\unity3, that wont cause problems?

I have the same error, please help

http://forum.unity3d.com/threads/61972-Build-Standalone-Windos-error

I see, so a few of us could have this problem…anybody know what the problem is, im getting really annoyed with it. I’ll just have to drop back down to 2.6 for now :-p