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[Oren Barnea <oren.barnea@xxxxxxxxx>]

Public bug reported:

I'm on Intrepid.
Trying to maximize, minimize or doing anything else causes Do to crash.
When I run Do from the terminal, I get this with the crash:

WindowManager.WindowItemSource "Generic Window Items" encountered an error in ChildrenOfItem: Argument cannot be null.
Parameter name: source.
WindowManager.ScreenItemSource "Window Screen Items" encountered an error in ChildrenOfItem: Argument cannot be null.
Parameter name: source.
WindowManager.WindowItemSource "Generic Window Items" encountered an error in ChildrenOfItem: Argument cannot be null.
Parameter name: source.
Exception in Gtk# callback delegate
  Note: Applications can use GLib.ExceptionManager.UnhandledException to handle the exception.
System.NullReferenceException: Object reference not set to an instance of an object
  at Do.Core.HistogramRelevanceProvider.IncreaseRelevance (Do.Universe.Element o, System.String match, Do.Universe.Element other) [0x00000] 
  at Do.Core.Element_RelevanceProvider.IncreaseRelevance (Do.Universe.Element self, System.String match, Do.Universe.Element 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 Do.Interface.AnimationBase.AbstractAnimatedInterface.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.Widget.keypressevent_cb(IntPtr , IntPtr )
   at Gtk.Application.gtk_main()
   at Gtk.Application.gtk_main()
   at Gtk.Application.Run()
   at Do.Do.Main(System.String[] args)

** Affects: do-plugins
     Importance: Undecided
         Status: New

-- 
Window Manager plugin on Do 0.7.97: Doing anything crashes Do
https://bugs.launchpad.net/bugs/318652
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