My Xcode 7.0.1 and Xcode 6.4 won't open while Xcode-beta.app(Xcode 7.1 beta 3) lives in /Applications.One solution for me is just moving the Xcode-beta.app out of /Applications, and everything works fine as usual.(except for Xcode 6.4 missing UI for selecting devices, well I knew 6.4 not supported in El Capitan)Not sure whether other versions have similar issue, but this seems to happen just after I installed Xcode 7.1 beta 3 (previously beta 1).No idea how to get logs of Xcode launching process.Environment:OS X El Capitan 10.11Xcode.app (Xcode 7.0.1, installed from App Store)Xcode.app (Xcode 6.4, installed from App Store and used out of /Applications)Xcode-beta.app (Xcode 7.1 beta 3, downloaded from https://developer.apple.com/xcode/download/ )
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