software-center crashed with TypeError in _on_property_changed()

[ubby]

Binary package hint: software-center

I was getting this bug when testing Ubuntu 10.10 in virtualbox.
I was opening Ubuntu Software Center.

ProblemType: Crash
DistroRelease: Ubuntu 10.10
Package: software-center 2.1.22.1
ProcVersionSignature: Ubuntu 2.6.35-22.32-generic 2.6.35.4
Uname: Linux 2.6.35-22-generic i686
Architecture: i386
Date: Sat Sep 18 15:25:13 2010
ExecutablePath: /usr/share/software-center/software-center
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Alpha i386 (20100917)
InterpreterPath: /usr/bin/python2.6
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/software-center
ProcEnviron:
 LANG=nl_NL.UTF-8
 SHELL=/bin/bash
PythonArgs: ['/usr/bin/software-center']
SourcePackage: software-center
Title: software-center crashed with TypeError in _on_property_changed()
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 #638039, 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.