xcode won't compile iOS apps, crashes when .xib or .storyboard files are opened

Question

I\'m running the very latest version of xcode (4.2.1). And I\'m signed up to the ios developer program.

When I create a new iOS Application for iPhone or iPad, using

Answer 1

Try removing (you can try just moving them rather than deleting them) these user directories. Make sure your developer tools are not running when you do this.

~/Library/Application\ Support/iPhone\ Simulator
~/Library/Application\ Support/Developer
~/Library/Developer

These directories are particular to your user.