software-center crashed with ImportError in _create_scagent_if_needed(): No module named backend.scagent

[FrankX]

following dist upgrade to 11.10, i was adding software i needed, the software-center crashed when i chose to reinstall previous purchases.

TEST CASE:
1. Launch Software-Center
2. Select the menu 'File / Reinstall Previous Purchases ...'

Result:
Traceback (most recent call last):
  File "/usr/share/software-center/softwarecenter/ui/gtk/app.py", line 724, in on_menuitem_reinstall_purchases_activate
    self._create_scagent_if_needed()
  File "/usr/share/software-center/softwarecenter/ui/gtk/app.py", line 718, in _create_scagent_if_needed
    from backend.scagent import SoftwareCenterAgent
ImportError: No module named backend.scagent

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: software-center 4.1.8
ProcVersionSignature: Ubuntu 3.0-3.4-generic 3.0.0-rc5
Uname: Linux 3.0-3-generic i686
Architecture: i386
Date: Tue Jul 5 15:02:56 2011
EcryptfsInUse: Yes
ExecutablePath: /usr/share/software-center/software-center
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
InterpreterPath: /usr/bin/python2.7
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/software-center
ProcEnviron:
 LANGUAGE=en_GB:en
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
PythonArgs: ['/usr/bin/software-center']
SourcePackage: software-center
Title: software-center crashed with ImportError in _create_scagent_if_needed(): No module named backend.scagent
UpgradeStatus: Upgraded to oneiric on 2011-07-05 (0 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Jean-Baptiste Lallement (jibel)]

Thanks for your report. Easily reproducible. Setting to triaged.

[Launchpad Janitor (janitor)]

This bug was fixed in the package software-center - 4.1.10

---------------
software-center (4.1.10) oneiric; urgency=low

  [ Michael Vogt ]
  * merged lp:~alexeftimie/software-center/backend-refactor,
    many thanks
  * merged lp:~mmcg069/software-center/search-aid-improvments,
    many thanks
  * add generic "use_cache" to SimpleFileDownloader
  * softwarecenter/ui/gtk3/widgets/exhibits.py:
    - add basic ExhibitBanner widget
  * merged lp:~roignac/software-center/bug-805969,
    many thanks to Vadim Rutkovsky (LP: #805969)
  * merged lp:~aaronp/software-center/more-top-rated, many thanks
    to Aaron Peachey
  * add top rated carousel

  [ Gary Lasker ]
  * softwarecenter/ui/gtk/app.py,
    softwarecenter/ui/gtk/availablepane.py,
    softwarecenter/ui/gtk/catview_gtk.py,
    softwarecenter/ui/gtk/softwarepane.py:
    - improvement for a local debian package install, display a
      "loading" spinner while the package loads and do not show
      the main categories view momentarily
  * softwarecenter/backend/reviews.py:
    - fix crash on an undefined histogram value (LP: #812923)
  * softwarecenter/ui/gtk/historypane.py,
    softwarecenter/ui/gtk3/panes/historypane.py:
    - apply patch from Michael Terry to fix a crash when
      initializing the history pane, many thanks! (LP: #746984)
  * softwarecenter/db/debfile.py,
    softwarecenter/ui/gtk/appdetailsview_gtk.py,
    softwarecenter/ui/gtk/availablepane.py:
    - reduce startup time when installing a deb file by ~50%
 -- Michael Vogt <email address hidden> Fri, 22 Jul 2011 15:43:43 +0200