I have recently upgraded my BlogEngine.Net installation to 1.6 and .Net 4.0, however, I did not build BlogEngine.Core when I performed the upgrade. However, when I try to build the BlogEngine.Core project now, the compile fails because it cannot load the symbols for (System.Web.Security.)MembershipProvider. I believe this to be a .Net/C#/user problem rather than a BlogEngine issue.
The project has a reference to the library System.Web, and the class file (which inherits from MembershipProvider) includes a Using for System.Web.Security. With ReSharper enabled, IntelliSense indicates confusion as to which membership provider to use giving a choice of two libraries of the same name (System.Web.Security).
What could have caused this ambiguous reference? How can I determine which two libraries are being referenced? Nothing obvious indicates a duplicate reference. Then again, the obvious is really obvious once you see it.
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