quit.py crashed with AttributeError in theme(): 'awn.ThemedIcon' object has no attribute 'create_remove_custom_icon_item'

[spartan15]

The Dock Preferences not opened and the awn remain in part white.

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: awn-applet-quit-applet 0.4.1~bzr1485-0ubuntu3
ProcVersionSignature: Ubuntu 2.6.38-1.28-generic 2.6.38-rc2
Uname: Linux 2.6.38-1-generic i686
Architecture: i386
Date: Mon Jan 31 20:16:27 2011
ExecutablePath: /usr/share/avant-window-navigator/applets/quit/quit.py
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
InterpreterPath: /usr/bin/python2.7
PackageArchitecture: all
ProcCmdline: python /usr/share/avant-window-navigator/applets/quit/quit.py --lockscreen --uid=1292506336 --window=44040258 --panel-id=1
ProcEnviron:
 LANGUAGE=it_IT:it:en_GB:en
 LANG=it_IT.UTF-8
 LC_MESSAGES=it_IT.utf8
 SHELL=/bin/bash
PythonArgs: ['/usr/share/avant-window-navigator/applets/quit/quit.py', '--uid=1292506336', '--window=44040258', '--panel-id=1']
SourcePackage: awn-extras
Title: quit.py crashed with AttributeError in theme(): 'awn.ThemedIcon' object has no attribute 'create_remove_custom_icon_item'
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make Ubuntu better. This particular crash has already been reported and is a duplicate of bug #709427, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.