gnome-do crashes when Inkscape has more than 1 dialog open

Binary package hint: gnome-do

If Inkscape is running with more than 1 dialog window open, using the Inkscape icon on the docky to change to Inkscape crashes gnome-do.

I tried with GIMP which has various windows and it doesn't happen, so the crash may have something to do with how Inkscape manages multiple windows?

I have advanced indicators on, I only have one indicator under Inkscape, and if I use the right button menu to choose the Inkscape window, it doesn't crash, only if I use the icon. Also, if I use the menu to choose the window, it doesn't crash the next time I use the icon. If I restart gnome-do and Inkscape isn't requiring attention (blue indicator) before I restart gnome-do, it'll crash again. If the indicator was blue before I restarted gnome-do, it doesn't crash. Does my explanation make sense?

gnome-do exits with the following error:

Exception in Gtk# callback delegate
  Note: Applications can use GLib.ExceptionManager.UnhandledException to handle the exception.
System.InvalidOperationException: Operation is not valid due to the current state of the object
  at System.Linq.Enumerable.First[Window] (IEnumerable`1 source) [0x00000]
  at Docky.Utilities.WindowControl+<FocusWindows>c__AnonStorey22.<>m__85 () [0x00000]
  at GLib.Timeout+TimeoutProxy.Handler () [0x00000]
   at GLib.ExceptionManager.RaiseUnhandledException(System.Exception e, Boolean is_terminal)
   at GLib.Timeout+TimeoutProxy.Handler()
   at GLib.Timeout+TimeoutProxy.Handler()
   at Gtk.Application.gtk_main()
   at Gtk.Application.gtk_main()
   at Gtk.Application.Run()
   at Do.Do.Main(System.String[] args)

I'm on Ubuntu 8.10 running gnome-do 0.8.1-0~intrepid~ppa1 from the do-core ppa.