Happily working in (as much as you can ever be happy in) Xcode 4.5.2 when modifying a storyboard, Xcode crashed.
Ok, no worries, Xcode crashes all the time. Restart it we are stuck. I get the little spinner in the middle of Xcode as it attempts to open the three tabs I had open. But eventually stops responding.
After I force quit, I notice a single process that is still left running:
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/Library/Xcode/Overlays/Interface Builder Cocoa Touch Tool --socketFD 30
I can sudo kill -9 this process all I want, but every time I open this project in Xcode, repeat performance.
Using the alt+shift+click trick for Xcode in the dock, I can open up a blank instance an open a different project just fine. No issues loading the storyboard view or anything.
I traced the issue to the one iPad storyboard I was working on. After doing Google research I opened up the storyboard in another editor and changed changed useAutolayout="YES" to useAutolayout="NO" and I was able to open the storyboard just fine in Xcode … but none of my objects were there.
I could keep on pontificating… but I’m really hoping one of you have seen this before. Thanks!
This isn’t an answer, but I had a similar experience. One thing I noticed was if I edited the Storyboard manually to disable AutoLayout, the UI objects were all still in the Storyboard, just with a height / width of 0. Not terribly helpful, as you still pretty much have to recreate everything from scratch (or at least since the last saved working version).