WindowlistScreenlet.py crashed with AttributeError in window_state_changed()

[id_crisis]

Binary package hint: screenlets

Description: Ubuntu lucid (development branch)
Release: 10.04

screenlet version==== 0.1.2-7ubuntu1

ProblemType: Crash
DistroRelease: Ubuntu 10.04
Package: screenlets 0.1.2-7ubuntu1
ProcVersionSignature: Ubuntu 2.6.32-17.26-generic 2.6.32.10+drm33.1
Uname: Linux 2.6.32-17-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
CheckboxSubmission: 37430b6a45973aaf19d2ff4bf14dd062
CheckboxSystem: edda5d4f616ca792bf437989cb597002
Date: Sun Mar 28 20:24:01 2010
ExecutablePath: /usr/share/screenlets/Windowlist/WindowlistScreenlet.py
InstallationMedia: Error: [Errno 13] Permission denied: '/var/log/installer/media-info'
InterpreterPath: /usr/bin/python2.6
PackageArchitecture: all
ProcCmdline: python -u /usr/share/screenlets/Windowlist/WindowlistScreenlet.py
ProcEnviron:
 LANG=en_US.utf8
 SHELL=/bin/bash
PythonArgs: ['/usr/share/screenlets/Windowlist/WindowlistScreenlet.py']
SourcePackage: screenlets
Title: WindowlistScreenlet.py crashed with AttributeError in window_state_changed()
Traceback:
 Traceback (most recent call last):
   File "/usr/share/screenlets/Windowlist/WindowlistScreenlet.py", line 311, in window_state_changed
     if new_state & wnck.WINDOW_STATE_DEMANDS_ATTENTION:
 AttributeError: 'module' object has no attribute 'WINDOW_STATE_DEMANDS_ATTENTION'
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 #403078, 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.