After losing my connection while downloading Xcode 4.2.1, the App Store has removed it from available updates and under purchases it says I am up to date (even though the date of the my installed version is before the latest update date). I have tried to do:
defaults write com.apple.appstore ShowDebugMenu -bool true
And then use the Debug menu item after restarting the App Store using these instructions:
Is there any other way to directly download 4.2.1 or to force the App Store to clear its cache, short of removing Xcode entirely?