gnome-app-install crashed with AttributeError in itemIsInstalled()

Binary package hint: gnome-app-install

Ubuntu 9.10

gnome-app-install:
  Installed: 0.5.50-0ubuntu1
  Candidate: 0.5.50-0ubuntu1
  Version table:
 *** 0.5.50-0ubuntu1 0
        500 http://lug.mtu.edu karmic/main Packages
        100 /var/lib/dpkg/status

I attempted to open "Add/Remove Applications" and it crashed.

ProblemType: Crash
Architecture: i386
Date: Mon Jul 27 05:17:23 2009
DistroRelease: Ubuntu 9.10
ExecutablePath: /usr/bin/gnome-app-install
InterpreterPath: /usr/bin/python2.6
NonfreeKernelModules: nvidia
Package: gnome-app-install 0.5.50-0ubuntu1
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/gnome-app-install
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-4.22-generic
PythonArgs: ['/usr/bin/gnome-app-install']
SourcePackage: gnome-app-install
Title: gnome-app-install crashed with AttributeError in itemIsInstalled()
Uname: Linux 2.6.31-4-generic i686
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare