React Native NavigatorIOS "PUSH" Crashes App When invoked on componentDidMount [Only on Cold Launch]

Question

The react-native application checks the local storage for an auth token, and if the token is available the app will navigate to the main page, but the application crashes when trying to call this.props.navigator.push. This only happens when the app is cold launched (works as expected when launched from the background)

AsyncStorageHelper.getUserToken().then((userToken)=>{
if (userToken !== null) {
    this.props.navigator.push({
        component: MainPage
    });
 } else {
  this.showLoginControls();
 }
})

The following code is called on componentDidMount() Method

Edit

Also note the application crashes only on release version So unable to get a stack-trace for the crash.