title: EntityFramework, version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 is incompatible with .net framework 4
body: <p>I have recently upgraded all solutions in my project to EF6 alpha3 but one of my projects is missing the EntityFramework.dll and EntityFramework.SQLServer.dll references. Naturally this is causing an error when I run the application, but when I try to manually add the references to the solution I get the error message: 
  "EntityFramework, version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 is incompatible with .net framework 4"</p>
  
  <p>My other solutions' application settings are .net 4 and they are not having this problem. What other setting or problem could be causing this? I am not sure what code or examples to attach here, so please request as needed. Thank you. </p>