Description of problem:
After installing the app it didn't launch with the 'Docky' interface (I assume the package reverts to a 'default' configuration). I launched gnome-do with the <Super>+<Space> key combination, and then click on the triangle on the top-right corner to drop down the menu. When I click on "preferences", the application terminates and I get the following dump:

Marshaling activate 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. ---> GLib.MissingIntPtrCtorException: GLib.Object subclass Do.Interface.ClassicWindow must provide a protected or public IntPtr ctor to support wrapping of native object handles.
  at GLib.ObjectManager.CreateObject (IntPtr raw) [0x00000]
  at GLib.Object.GetObject (IntPtr o, Boolean owned_ref) [0x00000]
  at GLib.Object.GetObject (IntPtr o) [0x00000]
  at Gtk.Grab.get_Current () [0x00000]
  at Do.Core.Controller.ShowPreferences () [0x00000]
  at Do.Universe.PreferencesItem.Run () [0x00000]
  at Do.UI.MainMenu+<MenuItemFromRunnableItem>c__AnonStorey12.<>m__2A (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)


Note: I am not sure if the 1st line included ('Marshalling ...") was present prior to clicking on the 'preferences' menu option or not.

Version-Release number of selected component (if applicable):

gnome-do-0.8.2-4.fc12.x86_64

How reproducible:

I was able to reproduce this on 3 out of 3 tries.


Steps to Reproduce:
1. With gnome-do-0.8.2-3.fc12.x86_64.rpm installed, running KDE, and with gnome-do configured to run the "Docky" interface ...
2. Update to gnome-do-0.8.2-4.fc12.x86_64 using yum.
3. Start gnome-do (I used the command-line to do this so that I could see any debug/error output)
4. Invoke gnome-do with the <Super>+<Space> key combination
5. Click on the triangle on the top-right corner to drop down the menu
6. Select 'preferences' from the menu using the mouse
  
Actual results:

Application terminates


Expected results:

The preferences panel displays

Additional info: