Why am I getting ibtool failed with exit code 255?

Question

All of a sudden I can\'t build my project. I get the following compiler error:

/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.pl

Answer 1

I had something similar happen to me too using Xcode 8.2.1 and iOS 10.2.

I switched to an earlier device version on the simulator and it worked. Then I switched back and it was fixed.