plasma-desktop crashed with AttributeError in __dtor__(): 'PythonWallpaperScript' object has no attribute 'pluginName'

[Phissica]

Binary package hint: kdebase-workspace

Plasma crash message appears on every startup

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: plasma-desktop 4:4.6.2a-0ubuntu4
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
Architecture: amd64
Date: Mon Apr 18 18:11:49 2011
ExecutablePath: /usr/bin/plasma-desktop
InstallationMedia: Kubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
ProcCmdline: /usr/bin/plasma-desktop
ProcEnviron:
 LANG=de_AT.UTF-8
 SHELL=/bin/bash
SourcePackage: kdebase-workspace
Title: plasma-desktop crashed with AttributeError in __dtor__(): 'PythonWallpaperScript' object has no attribute 'pluginName'
Traceback:
 Traceback (most recent call last):
   File "/usr/share/kde4/apps/plasma_scriptengine_python/pywallpaper.py", line 57, in __dtor__
     PythonWallpaperScript.importer.unregister_top_level(self.pluginName)
 AttributeError: 'PythonWallpaperScript' object has no attribute 'pluginName'
UpgradeStatus: Upgraded to natty on 2011-04-15 (3 days ago)
UserGroups: admin dialout lp root

[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 #758968, 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.