I\'m using Xcode 4.3.2 and it tried to install an update to the command line tools.
I clicked the update button and Xcode told me that [my apple id] does not have access
Dominik Porada details the solution at Xcode 4.5 and iOS 5.1 Simulator, ie. download the old XCode 4.4.1 from Apple and pull out the simulation. Personally, I just copied the simulator from one of my other Macs that I hadn't upgraded XCode on yet.