Aftre upgrading to Lion 10.7.2 and I have updated Xcode to 4.2, Mac App Store still indicates Update Notice for Xcode 4.2 When I click on 'Update', a dialog pops up indicating something like 'cannot complete update' and to use 'Check Software Update' from Preferences. Well, after running 'Check Software Update', not surprising, it indicates no software update is required. BUT Mac App Store still flags Update Notice for Xcode 4.2 From the Launcher, I notice that there is an icon 'Install Xcode'. Is this icon causing the problem, and I should 'throw' it to Thrash? Otherwise, how am I supposed to flag Xcode is already updated to 4.2, and stop the Update Notice in Mac App Store. Thank you.