This is on a fully updated trunk, jaunty with 2.6.30 kernel and updated X stack from the x-swat-team ppa.
Marshaling changed signal
Exception in Gtk# callback delegate
Note: Applications can use GLib.ExceptionManager.UnhandledException to handle the exception.
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 Docky.Interface.AbstractDockItem..ctor () [0x00000]
at Docky.Interface.SeparatorItem..ctor () [0x00000]
at Docky.Core.Default.ItemsService..ctor () [0x00000]
at Docky.Core.DockServices.get_ItemsService () [0x00000]
at Docky.Core.DockServices.UnregisterService (IDockService service) [0x00000]
at Docky.Interface.DoInteropService.Dispose () [0x00000]
at Docky.Core.DockServices.Clean () [0x00000]
at Docky.Interface.DockWindow.Dispose () [0x00000]
at Do.Core.Controller.UnsetTheme () [0x00000]
at Do.Core.Controller.OnThemeChanged (System.Object sender, Do.Platform.PreferencesChangedEventArgs e) [0x00000]
at Do.CorePreferences.PreferencesChanged (System.Object sender, Do.Platform.PreferencesChangedEventArgs e) [0x00000]
at Do.Platform.Preferences.PreferencesImplementation`1[Do.CorePreferences].OnPreferencesChanged (System.String key, System.Object oldValue) [0x00000]
at Do.Platform.Preferences.PreferencesImplementation`1[Do.CorePreferences].Set[String] (IPreferencesService service, System.String key, System.String val) [0x00000]
at Do.Platform.Preferences.PreferencesImplementation`1[Do.CorePreferences].Set[String] (System.String key, System.String val) [0x00000]
at Do.CorePreferences.set_Theme (System.String value) [0x00000]
at Do.UI.ColorConfigurationWidget.OnThemeComboChanged (System.Object sender, System.EventArgs e) [0x00000]
at (wrapper managed-to-native) System.Reflection.MonoMethod:InternalInvoke (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) [0x00000]
--- 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) [0x00000]
at System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[] parameters) [0x00000]
at System.Delegate.DynamicInvokeImpl (System.Object[] args) [0x00000]
at System.MulticastDelegate.DynamicInvokeImpl (System.Object[] args) [0x00000]
at System.Delegate.DynamicInvoke (System.Object[] args) [0x00000]
at GLib.Signal.ClosureInvokedCB (System.Object o, GLib.ClosureInvokedArgs args) [0x00000]
at GLib.SignalClosure.Invoke (GLib.ClosureInvokedArgs args) [0x00000]
at GLib.SignalClosure.MarshalCallback (IntPtr raw_closure, IntPtr return_val, UInt32 n_param_vals, IntPtr param_values, IntPtr invocation_hint, IntPtr marshal_data) [0x00000]
at GLib.ExceptionManager.RaiseUnhandledException(System.Exception e, Boolean is_terminal)
at GLib.SignalClosure.MarshalCallback(IntPtr raw_closure, IntPtr return_val, UInt32 n_param_vals, IntPtr param_values, IntPtr invocation_hint, IntPtr marshal_data)
at Gtk.Application.gtk_main()
at Gtk.Application.Run()
at Do.Do.Main(System.String[] args)
status confirmed
importance high
milestone 0.8.2
I also see this on Karmic with trunk r1220.