piston_get_scagent_available_apps.py crashed with OSError in makedirs(): [Errno 17] File exists: '/home/sergio/.cache/software-center/scaclient'

[seraus]

Software center crashes when clicking "Installed" after upgrade Ubuntu 11.04 to 11.10.

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: software-center 4.1.20
ProcVersionSignature: Ubuntu 3.0.0-9.15-generic-pae 3.0.3
Uname: Linux 3.0.0-9-generic-pae i686
Architecture: i386
Date: Fri Sep 2 05:56:54 2011
ExecutablePath: /usr/share/software-center/piston_get_scagent_available_apps.py
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta i386 (20110330)
InterpreterPath: /usr/bin/python2.7
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/share/software-center/piston_get_scagent_available_apps.py available_apps en oneiric i386
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
PythonArgs: ['/usr/share/software-center/piston_get_scagent_available_apps.py', 'available_apps', 'en', 'oneiric', 'i386']
SourcePackage: software-center
Title: piston_get_scagent_available_apps.py crashed with OSError in makedirs(): [Errno 17] File exists: '/home/sergio/.cache/software-center/scaclient'
UpgradeStatus: Upgraded to oneiric on 2011-09-01 (0 days ago)
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 #836172, 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.