Description of problem:
gnome-do crashes with an unhandled exception when I try to open preferences.

Version-Release number of selected component (if applicable):
gnome-do-0.8.1.3-3.fc11.x86_64

How reproducible:
Every time

Steps to Reproduce:
1. Run gnome-do
2. From the gnome-do box click the menu on the right top corner
3. Select preferences on the menu
  
Actual results:
gnome-do crashes:
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. ---> System.DllNotFoundException: libgnome-desktop-2.so.7
  at (wrapper managed-to-native) Gnome.DesktopItem:gnome_desktop_item_new_from_uri (intptr,int,intptr&)
  at Gnome.DesktopItem.NewFromUri (System.String uri, DesktopItemLoadFlags flags) [0x00000] 
  at Do.Platform.Linux.SystemService.get_AutoStartFile () [0x00000] 
  at Do.Platform.Linux.SystemService.IsAutoStartEnabled () [0x00000] 
  at Do.UI.GeneralPreferencesWidget.get_AutostartEnabled () [0x00000] 
  at Do.UI.GeneralPreferencesWidget..ctor () [0x00000] 
  at Do.UI.PreferencesWindow..ctor () [0x00000] 
  at Do.Core.Controller.ShowPreferences () [0x00000] 
  at Do.Universe.PreferencesItem.Run () [0x00000] 
  at Do.UI.MainMenu+<MenuItemFromRunnableItem>c__AnonStorey12.<>m__20 (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)


Expected results:
Preferences dialogue should be displayed.

Additional info:
There are a lot of these errors on startup, don't know if it's relevant:
[Error 23:12:27.672] Could not load desktop item: libgnome-desktop-2.so.7
[Error 23:12:27.673] Could not load desktop item: libgnome-desktop-2.so.7
gnome-desktop is currently gnome-desktop-2.26.0-1.fc11.x86_64 and provides:
/usr/lib64/libgnome-desktop-2.so.11.2.3
so maybe gnome-do needs a rebuild?