Yes, I archive old school. I keep two copies on two drives in two different buildings. But it was no change I made. It was taking over three minutes just to get to the first viewDidLoad. And it was all related to attaching the debug. Turn that off and it ran. So I deleted and reinstalled Xcode. That still didn't work. And again I deleted the derived data folder. This time, it worked. Maybe the first time I still had Xcode running. But it's working now. I'm happy. Here is an upvote.