I am running my DLL against FxCop and it is returning problems as seen in the image here (It also complains about System.Windows.Browser and System.Core, same versions):
I have told FxCop to search the GAC and it isn't helping. I do have System.Runtime.Serialization referenced in my project but it is showing as version 4.0.0.0. I do not see this particular version of the file anywhere.
Although I can skip it means it fails when I use FxCop Integrator in Visual Studio and I don't know what would happen if I tried to integrate into a automatic build.
But more to the point I am curious as to how you fix it as I don't like not understanding whats wrong.