Traceback (most recent call last):
  File "/usr/bin/software-center", line 155, in <module>
    app.run(args)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/app.py", line 1242, in run
    self.show_available_packages(args)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/app.py", line 1173, in show_available_packages
    show_app(self, app)
  File "/usr/share/software-center/softwarecenter/utils.py", line 112, in wrapper
    f(*args, **kwargs)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/app.py", line 1172, in show_app
    self.available_pane.show_app(app)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/panes/softwarepane.py", line 281, in show_app
    self.on_application_activated(None, app)
  File "/usr/share/software-center/softwarecenter/utils.py", line 112, in wrapper
    f(*args, **kwargs)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/panes/availablepane.py", line 699, in on_application_activated
    self.display_details_page)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/session/viewmanager.py", line 173, in display_page
    callback(page, view_state)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/panes/availablepane.py", line 633, in display_details_page
    SoftwarePane.display_details_page(self, page, view_state)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/panes/softwarepane.py", line 479, in display_details_page
    self.app_details_view.show_app(view_state.application)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/views/appdetailsview.py", line 1512, in show_app
    self.app_details = app.get_details(self.db)
  File "/usr/share/software-center/softwarecenter/db/debfile.py", line 41, in get_details
    details = AppDetailsDebFile(db, application=self)
  File "/usr/share/software-center/softwarecenter/db/debfile.py", line 92, in __init__
    if not self._deb.check():
  File "/usr/lib/python2.7/dist-packages/apt/debfile.py", line 469, in check
    if not self.check_conflicts():
  File "/usr/lib/python2.7/dist-packages/apt/debfile.py", line 337, in check_conflicts
    if self._check_conflicts_or_group(or_group):
  File "/usr/lib/python2.7/dist-packages/apt/debfile.py", line 247, in _check_conflicts_or_group
    depname, in_conflict_checking=True)
  File "/usr/lib/python2.7/dist-packages/apt/debfile.py", line 97, in _maybe_append_multiarch_suffix
    elif self._cache[pkgname].candidate.architecture == "all":
  File "/usr/lib/python2.7/dist-packages/apt/cache.py", line 186, in __getitem__
    raise KeyError('The cache has no package named %r' % key)
KeyError: "The cache has no package named 'cxoffice2'"