software-center crashed with AttributeError in _on_transaction_finished()

[Pedro Varela]

Binary package hint: software-center

center software failed to install a program on the grounds that there was a network problem

ProblemType: Crash
DistroRelease: Ubuntu 10.10
Package: software-center 2.1.15
ProcVersionSignature: Ubuntu 2.6.35-19.28-generic 2.6.35.3
Uname: Linux 2.6.35-19-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Sun Sep 5 22:13:12 2010
ExecutablePath: /usr/share/software-center/software-center
InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.1)
InterpreterPath: /usr/bin/python2.6
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/software-center
ProcEnviron:
 LANGUAGE=pt:pt_BR:en
 LANG=pt_PT.UTF-8
 SHELL=/bin/bash
PythonArgs: ['/usr/bin/software-center']
SourcePackage: software-center
Title: software-center crashed with AttributeError in _on_transaction_finished()
Traceback:
 Traceback (most recent call last):
   File "/usr/share/software-center/softwarecenter/view/appview.py", line 1566, in _on_transaction_finished
     db = self.get_model().db
 AttributeError: 'NoneType' object has no attribute 'db'
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Kiwinote (kiwinote)]

software-center (2.1.20) maverick; urgency=low

  [ Michael Vogt ]
  * softwarecenter/backend/login_sso.py:
    - improve help text now that ubuntu-sso-client is more flexible
      about it (thanks to Naty Bidart) LP: #624097
  * debian/control:
    - tighten dependency of ubuntu-sso-client (for the helptext)
  * softwarecenter/db/update.py, softwarecenter/db/application.py:
    - add X-AppInstall-Description support and extract it from
      software-center-agent to support long descriptions from
      the agent (LP: #625254)
  * softwarecenter/view/pendingview.py:
    - add pulse for pending purchases (LP: #637377)
  * softwarecenter/utils.py:
    - improve logging of the imagedownloader
    - fix where-is-it for kde4 apps (LP: #635684)
  * softwarecenter/distro/Ubuntu.py:
    - fix icon downloading from extras.ubuntu.com and support possible
      country mirrors
  * softwarecenter/view/appdetailsview_gtk.py:
    - show pulse once the install starts (LP: #637377)
    - support "where is it" for non app-install-data if the desktop
      file has the same name as the package name (LP: #637452)
    - fix icon display in "where is it" if Icon=/path/to/file
  * softwarecenter/apt/aptcache.py:
    - add installed_count to the cache
  * softwarecenter/view/appdetailsview_gtk.py:
    - support bullets with " o item" in the description
      (LP: #584147)
  * send version of the package to screenshots.ubuntu.com so that it
    can return the most appropriate image. that is supported by debshoots
    now thanks to Christoph Haas
  * softwarecenter/backend/aptd.py:
    - fix a flickering in the viewswitcher spinenr when purchasing
      a application
    - hide the "buy" button when installing a purchase, fix uneven
      pulsing
  * merged lp:~mmcg069/software-center/small-ui-fix:
    - fix small horizonal line positioning bug.

  [ Gary Lasker ]
  * softwarecenter/view/softwarepane.py:
    - show a more reasonable number for hidden technical items
      in the installed view of "Provided by Ubuntu"
  * softwarecenter/enums.py,
    softwarecenter/utils.py,
    softwarecenter/view/appdetailsview_gtk.py,
    softwarecenter/view/softwarepane.py,
    softwarecenter/view/widgets/imagedialog.py:
    - create an alternative spinner widget that uses an animated gif
      for when gtk.Spinner is not available (LP: #637422)
  * softwarecenter/view/appview.py:
    - fix crash in _on_transaction_finished (LP: #631132)
    - enable show/hide technical items for "Installed Software"
  * softwarecenter/app.py:
    - fix crash in on_menu_edit_activate (LP: #624913)

  [ Kiwinote ]
  * softwarecenter/view/appdetailsview_gtk.py:
    - add basic a11y support for addon items
    - add a11y support for 'where is it'
  * softwarecenter/view/appview.py:
    - set buttons which aren't rendered insensitive (LP: #630521)
    - use a greyed out 'question mark' icon for pkg not found (LP: #635081)
    - for exact pkg not found matches, we don't always have a appname, whoops
  * softwarecenter/view/cat_view.py:
    - set verbose a11y name for the 'all' button for carousels, such that we
      include the secti...