could not be loaded when opening edmx

I received this error when opening an edmx file in my ASP.Net MVC 3 project. Spent several hours to figure out. Another related problem I had was that the “ADO.Net Entity Data Model” project template did not appear when adding new item to the project. Spent several hours finding a solution & finally found it here:

Installing “ADO.NET Entity Framework Tools” from Visual Studio 2010 media solved both the problems mentioned above.

Thanks :)

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