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

This started to happen to me when I installed and started using XCode 9 betas. When I started modifying good projects in 8.3, the storyboards got corrupted with this error and XCode crashed. I had XCode 7.x, 8.3 and 9 installed on my computer. I uninstalled all of them (and removed all related files) and then reinstalled 8.3 from the App Store. My project storyboards were still corrupted, but I was able to recover from backup and now things are just fine as I proceed.
Not sure if this is 9 beta related or not.