Could not load file or assembly ‘System.Data.Entity

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To use an external Entity Framework model (embed in a DLL for example) with ASP.NET MVC 3 you must :

  1. Add the following reference to your MVC project : System.Data.Entity (Version 4.0.0.0, Runtime v4.0.30319)
  2. Add the following line in your web.config

…

< compilation debug="true" targetFramework="4.0">

  <assemblies>
    <add assembly="System.Data.Entity, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
  </assemblies>
</compilation>

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