Beta testing Ubuntu 11.10 BUG software-center

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

just trying to install skype from natty-partner source
ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: software-center 4.1.23.2
ProcVersionSignature: Ubuntu 3.0.0-11.18-generic 3.0.4
Uname: Linux 3.0.0-11-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 1.23-0ubuntu1
Architecture: amd64
Date: Fri Sep 16 19:22:49 2011
ExecutablePath: /usr/share/software-center/software-center
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
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 display_matches(): 'NoneType' object has no attribute 'set_from_matches'
UpgradeStatus: Upgraded to oneiric on 2011-09-16 (0 days ago)
UserGroups: adm admin cdrom dialout fax floppy fuse lpadmin netdev plugdev sambashare vboxusers