Traceback (most recent call last):
  File "/usr/share/software-center/softwarecenter/view/appdetailsview.py", line 125, in _on_cache_ready
    self.show_app(self.app)
  File "/usr/share/software-center/softwarecenter/view/appdetailsview_gtk.py", line 1441, in show_app
    self._update_page(self.app_details)
  File "/usr/share/software-center/softwarecenter/view/appdetailsview_gtk.py", line 1356, in _update_page
    self._configure_where_is_it()
  File "/usr/share/software-center/softwarecenter/view/appdetailsview_gtk.py", line 1396, in _configure_where_is_it
    where = searcher.get_main_menu_path(self.app_details.desktop_file)
  File "/usr/share/software-center/softwarecenter/utils.py", line 229, in get_main_menu_path
    needle = os.path.basename(desktop_file)
  File "/usr/lib/python2.6/posixpath.py", line 111, in basename
    i = p.rfind('/') + 1
AttributeError: 'NoneType' object has no attribute 'rfind'