Comment 9 for bug 452151

I still get error with a the latest build:

(Do:26454): Wnck-CRITICAL **: wnck_set_client_type got called multiple times.

[Error 20:17:44.397] [AbstractKeyBindingService] Failed to bind "Summon in Text Mode" to ""
[Error 20:17:54.327] GMailContacts Error: Invalid credentials
[Error 20:17:54.330] An error has occurred in UpdateCalendars
[Error 20:17:54.376] [GDocs] Invalid credentials
[Error 20:17:54.680] [ItemsService] Could not add custom item with id: Type to begin searching: (Do.Interface.Widgets.DefaultLabelBoxItem)
Exception in Gtk# callback delegate
  Note: Applications can use GLib.ExceptionManager.UnhandledException to handle the exception.
System.ArgumentNullException: Argument cannot be null.
Parameter name: element
  at Do.Core.HistogramRelevanceProvider.IncreaseRelevance (Do.Universe.Item element, System.String match, Do.Universe.Item other) [0x00000]
  at Do.Core.ItemExtensions.IncreaseRelevance (Do.Universe.Item self, System.String match, Do.Universe.Item other) [0x00000]
  at Do.Core.Controller.PerformAction (Boolean vanish) [0x00000]
  at Do.Core.Controller.OnActivateKeyPressEvent (Gdk.EventKey evnt) [0x00000]
  at Do.Core.Controller.KeyPressWrap (Gdk.EventKey evnt) [0x00000]
  at (wrapper delegate-invoke) Do.Interface.DoEventKeyDelegate:invoke_void__this___EventKey (Gdk.EventKey)
  at Docky.Interface.DockWindow.OnKeyPressEvent (Gdk.EventKey evnt) [0x00000]
  at Gtk.Widget.keypressevent_cb (IntPtr widget, IntPtr evnt) [0x00000]
   at GLib.ExceptionManager.RaiseUnhandledException(System.Exception e, Boolean is_terminal)
   at Gtk.Widget.keypressevent_cb(IntPtr widget, IntPtr evnt)
   at Gtk.Application.gtk_main()
   at Gtk.Application.Run()
   at Do.Do.Main(System.String[] args)