I have been reading the forums and so far none of the solutions suggested works for me. I\'m running Xcode 4.4.1 and testing in iPhone 5.1 simulator. The simulator won\'t op
and another one for the record: (none of the suggestions worked for me)
Mountain Lion: XCode 4.6.3
moved the whole Application to Trash and deleted following other folders/Users/[USERNAME]/Library/Developer/Users/[USERNAME]/Library/Caches/com.apple.dt.XCode/Users/[USERNAME]/Library/Application Support/iPhone Simulator
reboot System and reinstall XCode