Check out this post. Someone said that they check Use Native Instruments Library in IOS Advance Settings on the Appium GUI and it allowed the simulator to work and pass the error. This person also said the 8.4 simulator should run fine without this workaround. I haven’t tried this yet with the 9.1 ios simulator that was giving me the error initially with appium 1.4.13. I can’t promise it will work, but you can give it a try. Let us know if it works.