software-center crashed with SystemError in open()

[Jorge Prediger]

Binary package hint: software-center

1) $ lsb_release -rd
Description: Ubuntu lucid (development branch)
Release: 10.04

2) $ apt-cache policy software-center
software-center:
  Instalados: 1.1.21
  Candidato: 1.1.21
  Tabla de versión:
 *** 1.1.21 0
        500 http://ar.archive.ubuntu.com/ubuntu/ lucid/main Packages
        100 /var/lib/dpkg/status

3) update package list

4) package list is updated but generates an error report

ProblemType: Crash
DistroRelease: Ubuntu 10.04
Package: software-center 1.1.21
ProcVersionSignature: Ubuntu 2.6.32-17.26-generic 2.6.32.10+drm33.1
Uname: Linux 2.6.32-17-generic i686
NonfreeKernelModules: nvidia
Architecture: i386
CheckboxSubmission: 8d8f71c41fcae9b9911f748fcc413794
CheckboxSystem: da9af3b901b5569a389df6337f3d812f
Date: Mon Mar 29 00:49:15 2010
ExecutablePath: /usr/share/software-center/software-center
InterpreterPath: /usr/bin/python2.6
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/software-center
ProcEnviron:
 LANG=es_AR.utf8
 SHELL=/bin/bash
PythonArgs: ['/usr/bin/software-center']
SourcePackage: software-center
Title: software-center crashed with SystemError in open()
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare