Comment 0 for bug 959612

I just opened, clicked installed software, clicked on a category, it crashed.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: software-center 5.1.12
ProcVersionSignature: Ubuntu 3.2.0-19.30-generic 3.2.11
Uname: Linux 3.2.0-19-generic x86_64
ApportVersion: 1.94.1-0ubuntu2
Architecture: amd64
CrashCounter: 1
Date: Mon Mar 19 19:55:01 2012
ExecutablePath: /usr/share/software-center/software-center
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 __contains__(): 'NoneType' object has no attribute '__contains__'
UpgradeStatus: Upgraded to precise on 2012-03-13 (5 days ago)
UserGroups: adm admin audio cdrom dialout dip floppy fuse lpadmin plugdev video