After yesterday\'s Windows Update, I seem to have issues building my projects.
Related Windows Updates could be:
ASP.NET MVC 2.0: KB2993939
ASP.NET MVC 3.0:
I had same issue recently.
After Windows Update - my project in Visual Studio suddenly had 500+ errors - all related to system.web.mvc
So I deleted the reference and re-added it - found in C:\Program Files (x86)\Microsoft ASP.NET\ASP.NET MVC 3\Assemblies
Great - project compiles.
Put it on site - get "Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information"
After much messing around, I went to site, downloaded the version of it off there - referenced it - it worked on my laptop AND on site
phew!!!!!!!