Xib/Storyboard碰到不同版本的Xcode真是想死啊!

Command /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/ibtool failed with exit code 255

或者XIB无法打开...用右键open source code 打开..修改内容.....搞死人了......