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[Launchpad Bug Tracker <1245520@xxxxxxxxxxxxxxxxxx>]

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

** Changed in: software-center (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1245520

Title:
  software-center crash at start since 13.10

Status in software-center package in Ubuntu:
  New

Bug description:
  Hi,
  I have recently updated from Ubuntu 13.04 to 13.10. Today I wanted to install something with the software-center, but the application won't start.
  I get to the point where the software-center Window is empty and then it crashes with the following stack trace:

  Traceback (most recent call last):
    File "/usr/bin/software-center", line 183, in <module>
      app.run(args)
    File "/usr/share/software-center/softwarecenter/ui/gtk3/app.py", line 1375, in run
      self.show_available_packages(args)
    File "/usr/share/software-center/softwarecenter/ui/gtk3/app.py", line 1313, in show_available_packages
      self.view_manager.set_active_view(ViewPages.AVAILABLE)
    File "/usr/share/software-center/softwarecenter/ui/gtk3/session/viewmanager.py", line 150, in set_active_view
      view_widget.init_view()
    File "/usr/share/software-center/softwarecenter/ui/gtk3/panes/availablepane.py", line 227, in init_view
      self.cache, self.db, self.icons, self.apps_filter)
    File "/usr/share/software-center/softwarecenter/ui/gtk3/views/lobbyview.py", line 80, in __init__
      self.build()
    File "/usr/share/software-center/softwarecenter/ui/gtk3/views/lobbyview.py", line 326, in build
      self._build_homepage_view()
    File "/usr/share/software-center/softwarecenter/ui/gtk3/views/lobbyview.py", line 121, in _build_homepage_view
      self._append_whats_new()
    File "/usr/share/software-center/softwarecenter/ui/gtk3/views/lobbyview.py", line 255, in _append_whats_new
      whats_new_cat = self._update_whats_new_content()
    File "/usr/share/software-center/softwarecenter/ui/gtk3/views/lobbyview.py", line 240, in _update_whats_new_content
      docs = whats_new_cat.get_documents(self.db)
    File "/usr/share/software-center/softwarecenter/db/categories.py", line 131, in get_documents
      nonblocking_load=False)
    File "/usr/share/software-center/softwarecenter/db/enquire.py", line 330, in set_query
      self._blocking_perform_search()
    File "/usr/share/software-center/softwarecenter/db/enquire.py", line 225, in _blocking_perform_search
      matches = enquire.get_mset(0, self.limit, None, xfilter)
    File "/usr/share/software-center/softwarecenter/db/appfilter.py", line 89, in __call__
      if (not pkgname in self.cache and
    File "/usr/share/software-center/softwarecenter/db/pkginfo_impl/aptcache.py", line 281, in __contains__
      return self._cache.__contains__(k)
  AttributeError: 'NoneType' object has no attribute '__contains__'

  I have attached a "full log" created with:
  [...] $ software-center --debug &> software-center.debug.txt

  Maybe this is a duplicate of https://bugs.launchpad.net/software-
  center/+bug/1199617

  Regards,
  rmmonster

  P.S.

  $ software-center --version
  software-center 13.10

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