software-center crashed with AttributeError in pkg_downloaded(): 'NoneType' object has no attribute 'filename'

[erimar030279]

Software-Center opened and crashed, but it the window opened. It seems SC is not crashed.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: software-center 5.1.9
ProcVersionSignature: Ubuntu 3.2.0-17.26-genusername 3.2.6
Uname: Linux 3.2.0-17-generic x86_64
ApportVersion: 1.92-0ubuntu1
Architecture: amd64
CrashCounter: 1
Date: Thu Feb 23 15:39:32 2012
DuplicateOf: https://bugs.launchpad.net/bugs/936262
ExecutablePath: /usr/share/software-center/software-center
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
InterpreterPath: /usr/bin/python2.7
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/software-center
PythonArgs: ['/usr/bin/software-center']
SourcePackage: software-center
Title: software-center crashed with AttributeError in pkg_downloaded(): 'NoneType' object has no attribute 'filename'
UpgradeStatus: Upgraded to precise on 2012-02-23 (0 days ago)
UserGroups: adm admin audio cdrom davfs2 dialout lpadmin plugdev sambashare

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #936262, 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.