software-center crashed with AttributeError in _on_transaction_progress_changed(): 'NoneType' object has no attribute 'get_value'

[Kshitiz SIngh]

Trting to install Movie Player. The player which came with ubuntu install

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: software-center 5.1.8
ProcVersionSignature: Ubuntu 3.2.0-14.23-generic 3.2.3
Uname: Linux 3.2.0-14-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 1.91-0ubuntu1
Architecture: amd64
CrashCounter: 1
Date: Mon Feb 6 00:07:17 2012
DuplicateOf: https://bugs.launchpad.net/bugs/913328
ExecutablePath: /usr/share/software-center/software-center
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20111129.1)
InterpreterPath: /usr/bin/python2.7
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/software-center
PythonArgs: ['/usr/bin/software-center']
SourcePackage: software-center
Title: software-center crashed with AttributeError in _on_transaction_progress_changed(): 'NoneType' object has no attribute 'get_value'
Traceback:
 Traceback (most recent call last):
   File "/usr/share/software-center/softwarecenter/ui/gtk3/views/appdetailsview.py", line 1822, in _on_transaction_progress_changed
     self.adjustment_value = self.get_vadjustment().get_value()
 AttributeError: 'NoneType' object has no attribute 'get_value'
UpgradeStatus: Upgraded to precise on 2012-02-04 (1 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Launchpad Janitor (janitor)]

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

[Martin Pitt (pitti)]

Hello Kshitiz, or anyone else affected,

Accepted software-center into precise-proposed. The package will build now and be available in a few hours. Please test and give feedback here. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you in advance!

[Gary Lasker (gary-lasker)]

This bug is difficult to reproduce reliably, but to test you can simply do a few installs and removes from the details page for some different apps. In some test cases, try scrolling to a different point in the view during the installation/removal. This will help insure that there are no regressions.

I've done this testing with software-center 5.2.1 in precise-proposed, and can verify that this fix does not cause regressions or problems of any kind.

Many thanks!

[Launchpad Janitor (janitor)]

This bug was fixed in the package software-center - 5.2.1

---------------
software-center (5.2.1) precise-proposed; urgency=low

  [ Michael Vogt ]
  * lp:~mvo/software-center/lp977179:
    - make the review UI react correctly to conditions of network
      availability (LP: #977179)
  * lp:~mvo/software-center/fix-crash-deb-file-size-calc:
    - fix crash when installing a deb file that is not found in
      the current apt cache
  * lp:~mvo/software-center/lp981992:
    - fix a crash in the new a11y code if there is a row that has
      no data or is not yet preloaded (LP: #981992)
  * lp:~mvo/software-center/fix-gmenu-searcher:
    - fix the menu searcher for non-Unity configurations after
      the app-install-data-ubuntu file layout changed
  * lp:~mvo/software-center/lp808455:
    - trivial fix for crash on downstream distros (LP: #808455)
  * lp:~mvo/software-center/lp927262:
    - fix crash when get_vadjustment() returns None (LP: #927262)
  * lp:~mvo/software-center/utf8-fixes:
    - fix various utf8-related crashes (LP: #943500, LP: #922225,
      LP: #917755)
  * lp:~mvo/software-center/gwibber-utf8-lp985255:
    - fix a utf8 crash in the gwibber integration (LP: #985255)
  * lp:~mvo/software-center/workaround-gtk-regression-lp986186:
    - workaround performance issue with the Gtk.TreeView.set_model()
      call when there is a cell_data_func attached. Not every user is
      affected (settings dependant somehow), but when affected it causes
      a massive performance degration for huge list models like "System"
      (LP: #986186). This branch works around the problem by disconnecting
      the cell_data_func before setting the new model.
  * lp:~mvo/software-center/fix-clear-credentials-race:
    - fix an incorrect use of the sso dbus backend, we now correctly
      wait until it emits a CredentialsCleared signal (LP: #986117)

  [ Gary Lasker ]
  * lp:~gary-lasker/software-center/add-to-launcher-after-auth-lp972710:
    - fix bug where an application will be added to the Unity launcher
      in the case where the user cancels the installation auth dialog
      (LP: #972710)
  * lp:~gary-lasker/software-center/recommendations-sso-login-lp973612:
    - fix bug where the recommendations opt-in panel is hidden if
      the user declines the SSO dialog after opting in (LP: #973612)
    - fix the user experience if the user has previously opted-in to
      recommendations and their SSO token is found have been removed
      or revoked or otherwise found to be invalid (LP: #967064)
    - improve the responsiveness of the spinner in the recommendations
      flow
 -- Michael Vogt <email address hidden> Thu, 26 Apr 2012 09:47:19 +0200