The software-center crashes before it finishes loading

[cariboo]

Running Quantal, try to start the software-center from the dash, and it crashes, running it in a terminal gives the following output

cariboo@alexis:~$ software-center
2012-05-16 20:09:30,779 - softwarecenter.ui.gtk3.app - INFO - setting up proxy 'None'
2012-05-16 20:09:30,783 - softwarecenter.db.database - INFO - open() database: path=None use_axi=True use_agent=True
2012-05-16 20:09:31,091 - softwarecenter.backend.reviews - WARNING - Could not get usefulness from server, no username in config file
2012-05-16 20:09:31,559 - softwarecenter.db.pkginfo_impl.aptcache - INFO - aptcache.open()
Traceback (most recent call last):
  File "/usr/bin/software-center", line 176, in <module>
    app.run(args)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/app.py", line 1343, in run
    self.show_available_packages(args)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/app.py", line 1273, in show_available_packages
    self.view_manager.set_active_view(ViewPages.AVAILABLE)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/session/viewmanager.py", line 149, in set_active_view
    view_widget.init_view()
  File "/usr/share/software-center/softwarecenter/ui/gtk3/panes/availablepane.py", line 133, in init_view
    SoftwarePane.init_view(self)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/panes/softwarepane.py", line 233, in init_view
    self.datadir)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/views/appdetailsview.py", line 886, in __init__
    self._layout_page()
  File "/usr/share/software-center/softwarecenter/ui/gtk3/views/appdetailsview.py", line 1185, in _layout_page
    self.pkg_statusbar = PackageStatusBar(self)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/views/appdetailsview.py", line 176, in __init__
    self.progress.set_data("transparent-bg-hint", True)
AttributeError: 'ProgressBar' object has no attribute 'set_data'

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: software-center 5.2.2
ProcVersionSignature: Ubuntu 3.4.0-1.3-generic 3.4.0-rc5
Uname: Linux 3.4.0-1-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu7
Architecture: amd64
Date: Thu May 17 12:31:03 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_CA:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_CA.UTF-8
 SHELL=/bin/bash
SourcePackage: software-center
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.