Can't add System.Linq assembly
I wanted to look at the implementation of the System.Linq assembly but it wasn't showing me anything. I tried adding System.Linq from the GAC using File / Open Global Assembly Cache, but that didn't make any difference.
Next I closed the existing System.Linq assembly and it was removed from the Object Browser. Now I can't even add it back. I have tried adding from the GAC and using File / Open Assembly. I even tried dragging and dropping the file from Windows Explorer, but It doesn't add it back the the Object Browser.