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

The best option would be

1. Quit Simulator
2. Open Another Project
3. Run Project (just for the sake simulator opens)
4. Delete the earlier project from simulator
5. Clean the main project
6. Run again

Enjoy!!!