igeoghegan

System.NullReferenceException: Object reference not set to an instance of an object
  at Xamarin.Forms.Platform.iOS.NavigationRenderer.UpdateToolBarVisible () [0x00000] in <filename unknown>:0 
  at Xamarin.Forms.Platform.iOS.NavigationRenderer.ViewDidLoad () [0x00000] in <filename unknown>:0 
  at (wrapper managed-to-native) MonoTouch.ObjCRuntime.Messaging:IntPtr_objc_msgSendSuper (intptr,intptr)
  at MonoTouch.UIKit.UIViewController.get_View () [0x00030] in /Developer/MonoTouch/Source/monotouch/src/build/compat/UIKit/UIViewController.g.cs:2232 
  at Xamarin.Forms.Platform.iOS.NavigationRenderer.get_NativeView () [0x00000] in <filename unknown>:0 
  at Xamarin.Forms.Platform.iOS.PhoneMasterDetailRenderer.UpdateMasterDetailContainers () [0x00000] in <filename unknown>:0 
  at Xamarin.Forms.Platform.iOS.PhoneMasterDetailRenderer.HandlePropertyChanged (System.Object sender, System.ComponentModel.PropertyChangedEventArgs e) [0x00000] in <filename unknown>:0 
  at (wrapper delegate-invoke) <Module>:invoke_void__t