Xcode 4 hangs at “Attaching to (app name)”

Question

I just upgraded to Xcode 4 and for some reason my app won\'t run in the simulator or iOS device. It was working perfectly in Xcode 3, but all of a sudden now when I press ru

Answer 1

My solution is correcting the nib name. (I changed my nib name before for an iPad version but then I deleted the iPad nib file). Then it works well again.