IOS WatchKit - Adding a Key Value Observer to NSUserDefaults Failures

Question

I am trying to add the ability to send data from iPhone to Watch. I have application groups configured and everything works smoothly, but when I try to add an observer to NSUserDefaults in the Watch Extension file, the application always crashes on startup. (And yes, I confirmed that the application group name is correct and verified in all target capabilities, and all provisioning profiles are updated with the application group enabled)

the code:

override func willActivate() 
{
    super.willActivate()

    NSUserDefaults(suiteName: "my.suite.name")?.addObserver(self, forKeyPath: "phoneSaysHello", options: NSKeyValueObservingOptions.New, context: nil)
}

override func didDeactivate() 
{
    super.didDeactivate()

    // Remove listener for commands sent from phone
    NSUserDefaults(suiteName: "my.suite.name")?.removeObserver(self, forKeyPath: "phoneSaysHello", context: nil)
}

Error:

*** - "NSInternalInconsistencyException", : " 0x7f99534559b0 NSUserDefaults , . :  ( : 0x0, : 0x7f9953609200 > ) '

Answer 1

, NSUserDefaults . userDefaults .