Could not load file or assembly 'System.Web.WebPages.Razor' MVC 3
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I m getting this error.

    Could not load file or assembly 'System.Web.WebPages.Razor, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.

My Hosting provider is saying that MVC 3 is already installed and it works for one domain that s on the same server, but this domain is not working. getting this error.

i saw lot of questions and answers related to this, but i want to avoid adding dlls manually. if MVC 3 is installed properly. I wouldnt get this error. right?

how can i resolve this?

any ideas?