[Bug 834196] Re: software-center-gtk3 crashed with AttributeError in copy(): 'NoneType' object has no attribute 'copy'

[Aaron Peachey]

Hi,
If you don't know how to write python code, it's probably best not to try modifying the code, as you will need to get the indents correct etc. 
The issue has been fixed and will be available in the next software-center update, so my strong advice is to wait for that.

However if you are intent on fixing it before then, it's best to get the entire updated softwarepane.py file from here:
http://bazaar.launchpad.net/~kiwinote/software-center/tweaks/download/kiwinote%40gmail.com-20110826110015-fobea07so04vh5kv/softwarepane.py-20110705095105-hkqkaog02375crmg-28/softwarepane.py

Then copy it into your current installation (i.e. /usr/share/software-center/softwarecenter/ui/gtk3/panes/) using sudo. (I would make a backup copy of your existing softwarepane.py file first)
Note, this could break your installation temporarily and may also have other unintended effects so attempt it at your own risk.

cheers
Aaron

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https://bugs.launchpad.net/bugs/834196

Title:
  software-center-gtk3 crashed with AttributeError in copy(): 'NoneType'
  object has no attribute 'copy'

Status in “software-center” package in Ubuntu:
  Fix Committed

Bug description:
  software center crashed while switching between installation and
  update in history tab of new software-center

  ProblemType: Crash
  DistroRelease: Ubuntu 11.10
  Package: software-center 4.1.20
  ProcVersionSignature: Ubuntu 3.0.0-9.14-generic 3.0.3
  Uname: Linux 3.0.0-9-generic i686
  NonfreeKernelModules: wl
  Architecture: i386
  Date: Fri Aug 26 01:43:09 2011
  ExecutablePath: /usr/share/software-center/software-center-gtk3
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha i386 (20110806)
  InterpreterPath: /usr/bin/python2.7
  PackageArchitecture: all
  ProcCmdline: /usr/bin/python /usr/bin/software-center-gtk3
  ProcEnviron:
   LANGUAGE=en_GB:en
   PATH=(custom, no user)
   LANG=en_IN.UTF-8
   SHELL=/bin/bash
  PythonArgs: ['/usr/bin/software-center-gtk3']
  SourcePackage: software-center
  Title: software-center-gtk3 crashed with AttributeError in copy(): 'NoneType' object has no attribute 'copy'
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

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