I\'m using the XCode 4.2 beta (build 4D199) on Lion, and can\'t access the Developer Documentation in XCode 4.2 anymore. When I attempt to log-in, I get a pop-up telling me the
Had the same problem. To solve it (well seems like that), i went in
Xcode -> Preferences -> Downloads -> Documentation
Download the parts you need, for me it worked.