gistfile1.txt

System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.NullReferenceException: Object reference not set to an instance of an object
  at Xamarin.AndroidDesigner.AndroidRenderSession.ReplaceView (System.String parentId, System.String itemId, System.Xml.Linq.XElement xml) [0x00031] in /Users/builder/data/lanes/monodevelop-lion-master/781819ed/source/md-addins/MonoDevelop.MonoDroid/Xamarin.AndroidDesigner/Xamarin.AndroidDesigner/AndroidRenderSession.cs:398 
  at Xamarin.AndroidDesigner.AndroidDesignerSession.EndUpdateItem (System.String parentId, System.String itemId, System.Xml.Linq.XElement itemXml, Boolean internalUpdate, Boolean propagateChanges) [0x00172] in /Users/builder/data/lanes/monodevelop-lion-master/781819ed/source/md-addins/MonoDevelop.MonoDroid/Xamarin.AndroidDesigner/Xamarin.AndroidDesigner/AndroidDesignerSession.cs:2420 
  at Xamarin.AndroidDesigner.AndroidDesignerItem.ResetOverlayProperty (System.String prop) [0x00066] in /Users/builder/data/lanes/monodevelop-lion-master/781819ed/source/md-addins/MonoDevelop.MonoDroid/Xamarin.AndroidDesigner/Xamarin.AndroidDesigner/AndroidDesignerItem.cs:226 
  at Xamarin.AndroidDesigner.AndroidDesignerSurface.EndEditingLabel (Boolean acceptChanges) [0x00025] in /Users/builder/data/lanes/monodevelop-lion-master/781819ed/source/md-addins/MonoDevelop.MonoDroid/Xamarin.AndroidDesigner/Xamarin.AndroidDesigner/AndroidDesignerSurface.cs:363 
  at Xamarin.AndroidDesigner.AndroidDesignerSurface.EndEditing (Boolean acceptChanges) [0x00003] in /Users/builder/data/lanes/monodevelop-lion-master/781819ed/source/md-addins/MonoDevelop.MonoDroid/Xamarin.AndroidDesigner/Xamarin.AndroidDesigner/AndroidDesignerSurface.cs:326 
  at Xamarin.AndroidDesigner.AndroidDesignerSurface.HandleSessionImageChanged (System.Object sender, System.EventArgs e) [0x0013e] in /Users/builder/data/lanes/monodevelop-lion-master/781819ed/source/md-addins/MonoDevelop.MonoDroid/Xamarin.AndroidDesigner/Xamarin.AndroidDesigner/AndroidDesignerSurface.cs:127 
  at Xamarin.AndroidDesigner.AndroidDesignerSession.OnImageChanged () [0x0001e] in /Users/builder/data/lanes/monodevelop-lion-master/781819ed/source/md-addins/MonoDevelop.MonoDroid/Xamarin.AndroidDesigner/Xamarin.AndroidDesigner/AndroidDesignerSession.cs:1709 
  at Xamarin.AndroidDesigner.AndroidDesignerSession.Refresh (Boolean asyncRefresh) [0x0002f] in /Users/builder/data/lanes/monodevelop-lion-master/781819ed/source/md-addins/MonoDevelop.MonoDroid/Xamarin.AndroidDesigner/Xamarin.AndroidDesigner/AndroidDesignerSession.cs:814 
  at Xamarin.AndroidDesigner.AndroidDesignerSession.Refresh () [0x0001b] in /Users/builder/data/lanes/monodevelop-lion-master/781819ed/source/md-addins/MonoDevelop.MonoDroid/Xamarin.AndroidDesigner/Xamarin.AndroidDesigner/AndroidDesignerSession.cs:804 
  at Xamarin.AndroidDesigner.AndroidDesignerSession.Dispose () [0x0014d] in /Users/builder/data/lanes/monodevelop-lion-master/781819ed/source/md-addins/MonoDevelop.MonoDroid/Xamarin.AndroidDesigner/Xamarin.AndroidDesigner/AndroidDesignerSession.cs:526 
  at MonoDevelop.MonoDroid.Gui.AndroidDesignerView.Dispose () [0x00024] in /Users/builder/data/lanes/monodevelop-lion-master/781819ed/source/md-addins/MonoDevelop.MonoDroid/MonoDevelop.MonoDroid/Gui/AndroidDesignerView.cs:239 
  at MonoDevelop.Ide.Gui.SdiWorkspaceWindow.OnDestroyed () [0x000d3] in /Users/builder/data/lanes/monodevelop-lion-master/781819ed/source/monodevelop/main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Gui/SdiWorkspaceWindow.cs:404 
  at Gtk.Object.NativeDestroy (System.Object o, System.EventArgs args) [0x00000] in <filename unknown>:0 
  at (wrapper managed-to-native) System.Reflection.MonoMethod:InternalInvoke (System.Reflection.MonoMethod,object,object[],System.Exception&)
  at System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00054] in /private/tmp/source/bockbuild-mono-3.2.6/profiles/mono-mac-xamarin/build-root/mono-3.2.6/mcs/class/corlib/System.Reflection/MonoMethod.cs:230 
  --- End of inner exception stack trace ---
  at System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00069] in /private/tmp/source/bockbuild-mono-3.2.6/profiles/mono-mac-xamarin/build-root/mono-3.2.6/mcs/class/corlib/System.Reflection/MonoMethod.cs:238 
  at System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[] parameters) [0x00000] in /private/tmp/source/bockbuild-mono-3.2.6/profiles/mono-mac-xamarin/build-root/mono-3.2.6/mcs/class/corlib/System.Reflection/MethodBase.cs:114 
  at System.Delegate.DynamicInvokeImpl (System.Object[] args) [0x000d5] in /private/tmp/source/bockbuild-mono-3.2.6/profiles/mono-mac-xamarin/build-root/mono-3.2.6/mcs/class/corlib/System/Delegate.cs:424 
  at System.MulticastDelegate.DynamicInvokeImpl (System.Object[] args) [0x00018] in /private/tmp/source/bockbuild-mono-3.2.6/profiles/mono-mac-xamarin/build-root/mono-3.2.6/mcs/class/corlib/System/MulticastDelegate.cs:72 
  at System.Delegate.DynamicInvoke (System.Object[] args) [0x00000] in /private/tmp/source/bockbuild-mono-3.2.6/profiles/mono-mac-xamarin/build-root/mono-3.2.6/mcs/class/corlib/System/Delegate.cs:398 
  at GLib.Signal.ClosureInvokedCB (System.Object o, GLib.ClosureInvokedArgs args) [0x00000] in <filename unknown>:0 
  at GLib.SignalClosure.Invoke (GLib.ClosureInvokedArgs args) [0x00000] in <filename unknown>:0 
  at GLib.SignalClosure.MarshalCallback (IntPtr raw_closure, IntPtr return_val, UInt32 n_param_vals, IntPtr param_values, IntPtr invocation_hint, IntPtr marshal_data) [0x00000] in <filename unknown>:0