software-center crashed with TypeError in _confirm_remove_internal()

This bug was fixed in the package software-center - 3.1.1

---------------
software-center (3.1.1) natty; urgency=low

  [ Kiwinote ]
  * softwarecenter/app.py:
    - don't require '.deb' extentions for deb files (LP: #656967)
    - don't require absolute paths for deb files (LP: #669398)
  * softwarecenter/view/appdetailsview_gtk.py:
    - correctly reload appdetailsview after a transaction has run
    - _update_minimal() only gets two args

  [ Gary Lasker ]
  * softwarecenter/backend/channel.py,
    softwarecenter/view/channelpane.py,
    softwarecenter/view/viewswitcher.py:
    - convert channel getters to properties
  * softwarecenter/backend/config.py:
    - don't crash on a corrupted config file (LP: #662414)
  * softwarecenter/view/dependency_dialogs.py:
    - fix TypeError crash in remove dependency dialog
      (LP: #669161)
  * softwarecenter/utils.py,
    softwarecenter/view/softwarepane.py,
    softwarecenter/view/widgets/imagedialog.py,
    softwarecenter/view/widgets/spinner.py:
    - refactor spinner code
    - make a spinner panel widget and add label support
  * softwarecenter/backend/aptd.py:
    - fix crash during reload (LP: #673991)

  [ Michael Vogt ]
  * softwarecenter/view/purchasedialog.py:
    - show generic error on purchase failure and log the error
       (LP: #632361)
  * test/test_startup.py:
    - add startup speed baseline/regression test
  * software-center:
    - add --measure-startup-time commandline to allow external apps
      to drive statup performance measuring
  * utils/update-software-center-agent:
    - add --ignore-etag to force reload even if we have a cached version
  * softwarecenter/db/update.py:
    - do not fail if "MimeType" is missing from a desktop file
  * softwarecenter/apt/apthistory.py:
    - use python-apt tagfile parser instead of python-debian
  * debian/control:
    - drop python-debian dependency
  * test/test_gui_buy_something.py:
    - run test with --ignore-etag
  * softwarecenter/apt/aptcache.py, test/test_addons.py:
    - make the addons test more robust

  [ Martin Pitt ]
  * debian/rules: Supply dh --with option after $@, for compatibility with
    current debhelper.
  * debian/control: Build with scour for SVG optimization. Add python-scour
    build dependency.
 -- Michael Vogt <email address hidden> Thu, 18 Nov 2010 16:58:02 +0100