If you have experienced crashes in Visual Studio when opening view pages in design view or have had problems installing MVC, there is an update that may help resolve the issue:
This is actually an update to the CLR (.NET Framework)
Please be sure to get the package that matches your system x64 or x86.
As a side-note, ASP.NET MVC just released RC2 which is mostly updates to the install experience. You can download that here.