问题
I have tried following solutions to fix this issue
- removed derive data
- clean build
- create new storyboard file
回答1:
- The solution for me was to remove user data in .xcodeproj and .xcworkspace.
Right click > Show package content > and remove xcuserdata FOLDER ONLY.
- Other way to fix this is to open that project with other xcode version( for ex. you are working in xcode 8.2, open with 8.3) and close all windows, quit xcode and open the project with xcode version you want.
来源：https://stackoverflow.com/questions/46807974/xcode-9-is-being-crashed-on-opening-all-storyboard-files