I found the answer to this problem if anyone is interested.
In my main application, I am targeting the .NET Framework 4 client profile, but in one of the reference assemblers, I am targeting the complete .net infrastructure. Although intellisense and Visual Studio itself do not report a problem, the compiler throws an error. Not an error related to the mind of the target structure, just an error βType or namespace does not existβ related to my namespace, and not the lack of a framework version in the client profile.
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