Xcode 8 hangs / unresponsive when opening storyboard

Question

I\'ve recently upgraded to Xcode 8 and updated my project to Swift 3. All worked fine for a little while. Storyboard loading has always been slow (even when still running Xcode

Answer 1

I finally figured out a fix, based in large part on the answers to this question. It finally came down to a stare-and-compare with the XML of a working storyboard, but here's a summary of the steps I took.

• Reinstall Xcode 8.2.1 and reboot

• Remove config, state, and data files

  rm -rf ~/Library/Developer/*
  rm -rf ~/Library/Caches/com.apple.dt.Xcode/*
  rm -rf ~/Library/Developer/Xcode/DerivedData/*
  rm -rf ApplicationName.xcodeproj/xcuserdata/
  rm -rf ApplicationName.xcworkspace/xcuserdata/
  rm -rf ~/Library/Saved\ Application\ State/com.apple.dt.Xcode.savedState/
  

• Fix autolayout issues

• Remove all dependencies from storyboard XML except:

• Check all storyboards and xib files, ensuring that all "Top Bar" and "Bottom Bar" are set to "Inferred"

The last two items seemed to be the most important.