Traceback (most recent call last):
  File "/usr/bin/software-center-gtk3", line 169, in <module>
    app.run(args)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/app.py", line 1167, in run
    self.show_available_packages(args)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/app.py", line 1110, in show_available_packages
    show_app(self, app)
  File "/usr/share/software-center/softwarecenter/utils.py", line 107, in wrapper
    f(*args, **kwargs)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/app.py", line 1109, in show_app
    self.available_pane.show_app(app)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/panes/softwarepane.py", line 323, in show_app
    self.on_application_activated(None, app)
  File "/usr/share/software-center/softwarecenter/utils.py", line 107, in wrapper
    f(*args, **kwargs)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/panes/availablepane.py", line 597, in on_application_activated
    self.display_details_page)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/session/viewmanager.py", line 159, in display_page
    callback(page, view_state)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/panes/availablepane.py", line 530, in display_details_page
    SoftwarePane.display_details_page(self, page, view_state)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/panes/softwarepane.py", line 663, in display_details_page
    self.app_details_view.show_app(view_state.application)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/views/appdetailsview_gtk.py", line 1410, in show_app
    skip_update_addons=(type(self.app)==DebFileApplication))
  File "/usr/share/software-center/softwarecenter/ui/gtk3/views/appdetailsview_gtk.py", line 1235, in _update_all
    self._update_app_description(app_details, app_details.pkgname)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/views/appdetailsview_gtk.py", line 1131, in _update_app_description
    self.desc.set_description(description, appname)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/widgets/description.py", line 1157, in set_description
    self._parse_desc(desc, pkgname)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/widgets/description.py", line 1115, in _parse_desc
    desc = self._preparser.preparse(pkgname, desc)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/widgets/description.py", line 40, in preparse
    func_name = '_%s_preparser' % k.lower()
AttributeError: 'NoneType' object has no attribute 'lower'