Xcode 7.0 doc with Dash 3

Anyone could use Xcode 7.0 doc with Dash 3? I can't. iOS 9 and OS X 10.11 docs are both OK with Dash 3. But Xcode doc doesn't. Dash says that my doc is not downloaded correctly. I did what it said I should do but the result didn't change.


Xcode 7.0 (7A220) with today's release docs.