software-center crashed with TypeError: can't convert return value to desired type

[sebz]

Binary package hint: software-center

lsb_release -rd:

Description: Ubuntu lucid (development branch)
Release: 10.04

apt-cache policy packagename
W: Impossible de trouver le paquet packagename

apt-cache policy

Fichiers du paquet :
 100 /var/lib/dpkg/status
     release a=now
 500 http://quozl.netrek.org ./ Packages
     origin quozl.netrek.org
 500 http://security.ubuntu.com lucid-security/multiverse Packages
     release v=10.04,o=Ubuntu,a=lucid-security,n=lucid,l=Ubuntu,c=multiverse
     origin security.ubuntu.com
 500 http://security.ubuntu.com lucid-security/universe Packages
     release v=10.04,o=Ubuntu,a=lucid-security,n=lucid,l=Ubuntu,c=universe
     origin security.ubuntu.com
 500 http://security.ubuntu.com lucid-security/restricted Packages
     release v=10.04,o=Ubuntu,a=lucid-security,n=lucid,l=Ubuntu,c=restricted
     origin security.ubuntu.com
 500 http://security.ubuntu.com lucid-security/main Packages
     release v=10.04,o=Ubuntu,a=lucid-security,n=lucid,l=Ubuntu,c=main
     origin security.ubuntu.com
 500 http://archive.canonical.com lucid/partner Packages
     release v=10.04,o=Ubuntu,a=lucid,n=lucid,l=Ubuntu,c=partner
     origin archive.canonical.com
 500 http://fr.archive.ubuntu.com lucid-updates/multiverse Packages
     release v=10.04,o=Ubuntu,a=lucid-updates,n=lucid,l=Ubuntu,c=multiverse
     origin fr.archive.ubuntu.com
 500 http://fr.archive.ubuntu.com lucid-updates/universe Packages
     release v=10.04,o=Ubuntu,a=lucid-updates,n=lucid,l=Ubuntu,c=universe
     origin fr.archive.ubuntu.com
 500 http://fr.archive.ubuntu.com lucid-updates/restricted Packages
     release v=10.04,o=Ubuntu,a=lucid-updates,n=lucid,l=Ubuntu,c=restricted
     origin fr.archive.ubuntu.com
 500 http://fr.archive.ubuntu.com lucid-updates/main Packages
     release v=10.04,o=Ubuntu,a=lucid-updates,n=lucid,l=Ubuntu,c=main
     origin fr.archive.ubuntu.com
 500 http://fr.archive.ubuntu.com lucid/multiverse Translation-fr
 500 http://fr.archive.ubuntu.com lucid/multiverse Packages
     release v=10.04,o=Ubuntu,a=lucid,n=lucid,l=Ubuntu,c=multiverse
     origin fr.archive.ubuntu.com
 500 http://fr.archive.ubuntu.com lucid/universe Translation-fr
 500 http://fr.archive.ubuntu.com lucid/universe Packages
     release v=10.04,o=Ubuntu,a=lucid,n=lucid,l=Ubuntu,c=universe
     origin fr.archive.ubuntu.com
 500 http://fr.archive.ubuntu.com lucid/restricted Translation-fr
 500 http://fr.archive.ubuntu.com lucid/restricted Packages
     release v=10.04,o=Ubuntu,a=lucid,n=lucid,l=Ubuntu,c=restricted
     origin fr.archive.ubuntu.com
 500 http://fr.archive.ubuntu.com lucid/main Translation-fr
 500 http://fr.archive.ubuntu.com lucid/main Packages
     release v=10.04,o=Ubuntu,a=lucid,n=lucid,l=Ubuntu,c=main
     origin fr.archive.ubuntu.com
Paquets étiquetés :

ProblemType: Crash
Architecture: i386
Date: Thu Jan 21 19:11:28 2010
DistroRelease: Ubuntu 10.04
ExecutablePath: /usr/share/software-center/software-center
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release Candidate i386 (20091020.3)
InterpreterPath: /usr/bin/python2.6
Package: software-center 1.1.9
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/software-center
ProcEnviron:
 LANG=fr_FR.utf8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.32-10.14-generic
PythonArgs: ['/usr/bin/software-center']
SourcePackage: software-center
Title: software-center crashed with TypeError: can't convert return value to desired type
Traceback: TypeError: can't convert return value to desired type
Uname: Linux 2.6.32-10-generic i686
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 #506050, 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.