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

[sam tygier]

Binary package hint: software-center

happened when i clicked on 'installed software'. software center did not appear to actually crash

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: software-center 4.1.5
ProcVersionSignature: Ubuntu 3.0-0.1-generic 3.0.0-rc2
Uname: Linux 3.0-0-generic x86_64
Architecture: amd64
Date: Wed Jun 15 21:27:04 2011
ExecutablePath: /usr/share/software-center/software-center
InterpreterPath: /usr/bin/python2.7
LiveMediaBuild: Ubuntu 11.10 "Oneiric Ocelot" - Alpha amd64 (20110615)
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/software-center
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
PythonArgs: ['/usr/bin/software-center']
SourcePackage: software-center
Title: software-center crashed with AttributeError in update_search_help(): 'NoneType' object has no attribute 'get_supported_only'
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare