Comment 3 for bug 398469

Same hier on Karmic. Trying to refactor class names, variable names etc will throw an exception and eventually don't rename anything (variables are not renamed).

Error Message:
System.NullReferenceException: Object reference not set to an instance of an object
  at MonoDevelop.Core.Gui.ResourceService.GetIcon (System.String name, IconSize size) [0x00000]
  at MonoDevelop.Core.Gui.ResourceService.GetBitmap (System.String name, IconSize size) [0x00000]
  at MonoDevelop.Ide.Gui.BackgroundProgressMonitor+<BackgroundProgressMonitor>c__AnonStorey16.<>m__26 (System.Object , System.EventArgs ) [0x00000]
  at Gtk.Application+InvokeCB.Invoke () [0x00000]
  at GLib.Timeout+TimeoutProxy.Handler () [0x00000]

MonoDevelop Ide 2.0.0.0

$ mono --version
Mono JIT compiler version 2.4.2.3 (Debian 2.4.2.3+dfsg-2)
Copyright (C) 2002-2008 Novell, Inc and Contributors. www.mono-project.com
        TLS: __thread
        GC: Included Boehm (with typed GC)
        SIGSEGV: altstack
        Notifications: epoll
        Architecture: x86
        Disabled: none

$ uname -r
2.6.31-14-generic