ios8 - Unable to boot iOS 8 Simulator

Question

I have just updated my Xcode to 6.0.1 from Mac App Store, and my OS version is OS X 10.9.5. The problem is that the iOS 8 Simulator is not loading, but the iOS 7 simulator is working fine.

Every time I try to boot an iOS 8 simulator device, I get an error message:

"Unable to boot iOS Simulator"

Answer 1

The main cause of this error is that DYLD_INSERT_LIBRARIES is set. I suggest you unset DYLD_INSERT_LIBRARIES (likely in /etc/launchd.conf) or otherwise uninstall the product that set it, and then reboot.

OS X Yosemite has a software change to deal with this situation, so if you need the product that was setting DYLD_INSERT_LIBRARIES, I suggest you update to OS X Yosemite for your development.