I have Visual Studio 2010 /SP1 / MVC 3 (With April Tools Update) installed on a machine with a fresh install of Windows 7 64-bit Professional.
I do not have resharp
I had the same problem, I fixed it simply by installing Visual studio 2010 SP1. Everything is working fine since then. I hope this helps you.
You can download it from here: http://www.microsoft.com/download/en/details.aspx?id=23691
Good luck