iOS Simulator won't work with Xcode 7.3.1 after install macOS and Xcode 8.

How can I fix this?


Here is system logs.


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)

Replies

Having the same issue. This is terrible!

I'm also having this issue! Cant seem to get round this. However xcode does deploy the app to the simulator.

The same is happening herre ... there's another mysterious message
"failed to establish connection with DTServiceHub service"


Xcode-beta works OK launching the sim, but the rest of the team cant upgrade.


Meanwhile, you can launch it and connect to the process manually. It's a pain, btut it does work.

Problem solved by reinstalling xcode.

I confirm.

Reinstalling from Mac AppStore fails (did it twice), but with dmg 7.3.1, it's ok (just delete the app and reinstall it, no need to reboot)