Comment 14 for bug 1000238

 I encountered this when I tried to load ubuntu software center from command prompt,

 please what can I do to fix this?

koha@ubuntu:~$ software-center
2015-10-05 20:55:47,167 - softwarecenter.ui.gtk3.app - INFO - setting up proxy 'None'
2015-10-05 20:55:47,237 - softwarecenter.db.database - INFO - open() database: path=None use_axi=True use_agent=True
2015-10-05 20:55:48,423 - softwarecenter.backend.reviews - WARNING - Could not get usefulness from server, no username in config file
2015-10-05 20:55:48,634 - softwarecenter.ui.gtk3.app - INFO - show_available_packages: search_text is '', app is None.
2015-10-05 20:55:48,647 - 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 1422, in run
    self.show_available_packages(args)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/app.py", line 1352, in show_available_packages
    self.view_manager.set_active_view(ViewPages.AVAILABLE)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/session/viewmanager.py", line 154, in set_active_view
    view_widget.init_view()
  File "/usr/share/software-center/softwarecenter/ui/gtk3/panes/availablepane.py", line 136, in init_view
    SoftwarePane.init_view(self)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/panes/softwarepane.py", line 234, in init_view
    self.datadir)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/views/appdetailsview.py", line 883, in __init__
    self._layout_page()
  File "/usr/share/software-center/softwarecenter/ui/gtk3/views/appdetailsview.py", line 1182, in _layout_page
    self.pkg_statusbar = PackageStatusBar(self)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/views/appdetailsview.py", line 181, in __init__
    self.hbox.pack_end(self.progress, False, False, 0)
AttributeError: 'PackageStatusBar' object has no attribute 'progress'
koha@ubuntu:~$