App Crashes on AppDelegate Class Declaration with EXC_BAD_ACCESS CODE 1 on iOS 9.1/9.2

Question

I installed XCode 7.1 and 7.2 to update my app for iOS 9.1 and 9.2 respectively, but each time I run the app on simulators or devices the app crashes on the AppDelegate's class declaration as shown below. However, I have also XCode 7.0 and when I run my app on iOS 9.0 it works fine without any issue !.

The problem even if I compile the app for iOS 9.0 it would crashes on any device running iOS 9.1 or 9.2, I tried to change the initial view controller to be a simple plain one but it seems that it never reaches the point of loading view controllers and never reaches the beginning of func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject : AnyObject]?) -> Bool .

It seems that Apple did something with iOS 9.1 & 9.2. The app is written in swift, I enabled NSZombie and breakpoints to catch exceptions but I get no clue from the logs.

Debug Navigator:-

AppDelegate Class Declaration

Answer 1

That happens to me almost every time in new versions of Xcode/Swift/iOS. When I have had this problem I have erased that line and written it again.

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool 

Answer 2

This happens when you have not set you variable types correctly. Check how you declare them. In my case i was trying to access a Bool as UIColor.

Answer 3

I've generally had this happen when there is a storyboard problem. For example, an error in:

storyboard.instantiateController(withIdentifier: "FooView")

Try putting breakpoints around controllers that are being loaded around where you are crashing to see if that's the problem.