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IOS Simulator will not work with Xcode 7.3.1 after installing macOS and Xcode 8

After installing macOS Sierra + Xcode 8 beta p>

My Xcode 7.3.1 can no longer run the iOS simulator,

How can i fix this?

here are the system logs.

Jun 15 07:46:11 Siams-MacBook-Pro com.apple.xpc.launchd[1] (com.apple.CoreSimulator.CoreSimulatorService[2246]): Service exited due to signal: Killed: 9 sent by com.apple.CoreSimulator.CoreSimu[2246]
Jun 15 07:46:12 Siams-MacBook-Pro com.apple.CoreSimulator.CoreSimulatorService[2748]: com.apple.CoreSimulator.CoreSimulatorService 209.19 starting.
Jun 15 07:46:12 Siams-MacBook-Pro com.apple.CoreSimulator.CoreSimulatorService[2748]: Default device D340C405-CF9F-482C-82CE-ADE8A2399529 is no longer in the set, and an alternative could not be found.  iPhone / Watch pairings may not be correct.
Jun 15 07:46:12 Siams-MacBook-Pro com.apple.CoreSimulator.CoreSimulatorService[2748]: Default device C3CBAFAD-D139-49CE-9EF1-E2437A2349A7 is no longer in the set, and an alternative could not be found.  iPhone / Watch pairings may not be correct.
Jun 15 07:46:12 Siams-MacBook-Pro com.apple.CoreSimulator.CoreSimulatorService[2748]: Default device 0916CCBC-1DAA-4CA4-8DCA-FFD87C8941E0 is no longer in the set, and an alternative could not be found.  iPhone / Watch pairings may not be correct.
Jun 15 07:46:12 Siams-MacBook-Pro com.apple.CoreSimulator.CoreSimulatorService[2748]: Default device 9CC780B5-3034-4083-B52F-2354FB0A8252 is no longer in the set, and an alternative could not be found.  iPhone / Watch pairings may not be correct.

Another magazine

Jun 15 10:03:26 Siams-MacBook-Pro DTServiceHub[11482]: DTServiceHub[11482]: [error] 'mach_msg_send' failed: (ipc/send) invalid destination port (268435459)
Jun 15 10:03:36 Siams-MacBook-Pro Xcode[10188]: +[DTServiceHubClient localConnectionWithAuthorization:returningServerPid:]: failed to establish connection with DTServiceHub service '/Applications/Xcode.app/Contents/SharedFrameworks/DVTInstrumentsFoundation.framework/Resources/DTServiceHub'
Jun 15 10:03:36 Siams-MacBook-Pro Xcode[10188]: Xcode[10188]: [error] 'mach_msg_send' failed: (ipc/send) invalid destination port (268435459)
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3 answers

Short term solution:

  • Create application
  • The application will still be installed on the simulator, even with an error
  • Run the application manually on the simulator
  • Go to Xcode
  • Click Debug> Attach to Process> Your Application Name

This is not recommended, as you must do this every time you want to run the application.

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, XCode 7.3.1, 8 Beta XCode 7.3.1 DMG.

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