Info for SO question: http://stackoverflow.com/questions/27067801

gistfile1.txt

FROM XCODE CONSOLE:

*** Unable to run app in Simulator If you believe this error represents a bug, please attach the log file at /var/folders/74/k54kppb928s963936by98fzm0000gn/T/com.apple.dt.XCTest-status/Session-2014-11-21_13:05:32-Rla0wx.log

FROM THAT LOG FILE:

2014-11-21 13:05:32.265 Beginning test session with Xcode 6A1052c
2014-11-21 13:05:32.265 Testing on device: <DVTiPhoneSimulator: 0x7fa48133f4b0> {
		SimDevice: SimDevice : RedactedName.PhotoTest (3219C047-04CE-41BF-9BE4-F200B2BE25C1) : state={ Booted } deviceType={ SimDeviceType : com.apple.CoreSimulator.SimDeviceType.iPhone-6 } runtime={ SimRuntime : 8.1 (12B411) - com.apple.CoreSimulator.SimRuntime.iOS-8-1 }
}
2014-11-21 13:05:32.265 Initializing test infrastructure.
2014-11-21 13:05:32.265 Writing testing status log to /var/folders/74/k54kppb928s963936by98fzm0000gn/T/com.apple.dt.XCTest-status/Session-2014-11-21_13:05:32-Rla0wx.log.
2014-11-21 13:05:32.294 Creating the connection.
2014-11-21 13:05:32.294 Listening for proxy connection request from the test bundle (all platforms)
2014-11-21 13:05:32.294 Resuming the connection.
2014-11-21 13:05:32.294 Test connection requires daemon assistance.
2014-11-21 13:05:32.504 Checking test manager availability..., will wait up to 120s
2014-11-21 13:05:32.508 testmanagerd handled session request.
2014-11-21 13:05:32.508 Waiting for test process to launch.
2014-11-21 13:06:15.207 Launch session started, setting a disallow-finish-token on the run operation.
2014-11-21 13:06:15.223 Waiting for test process to check in..., will wait up to 120s
2014-11-21 13:06:15.253 Adding console adaptor for test process.
2014-11-21 13:07:15.287 Test operation failure: Unable to run app in Simulator
2014-11-21 13:07:15.287 _finishWithError:Error Domain=IDEUnitTestsOperationsObserverErrorDomain Code=3 "Unable to run app in Simulator" UserInfo=0x7fa481e2aed0 {NSLocalizedDescription=Unable to run app in Simulator} didCancel: 1