Could not load file or assembly ‘System.Web.Mvc’

I just wrote a blog post addressing this. You could install ASP.NET MVC on your server OR you can follow the steps here.

EDIT: (by jcolebrand) I went through this link, then had the same issue as Victor below, so I suggest you also add these:

* Microsoft.Web.Infrastructure
* System.Web.Razor
* System.Web.WebPages.Deployment
* System.Web.WebPages.Razor