package software-center 5.2.5 failed to install/upgrade: trying to overwrite '/usr/share/app-install/desktop', which is also in package app-install-data-partner 12.12.04.1

[Ingo Meyer]

Ubuntu 12.04 LTS
software-center
2012-09-23 18:08:23,468 - softwarecenter.ui.gtk3.app - INFO - setting up proxy 'None'
2012-09-23 18:08:23,511 - softwarecenter.db.database - INFO - open() database: path=None use_axi=True use_agent=True
2012-09-23 18:08:24,195 - softwarecenter.backend.reviews - WARNING - Could not get usefulness from server, no username in config file
2012-09-23 18:08:24,400 - softwarecenter.ui.gtk3.app - INFO - show_available_packages: search_text is '', app is None.

2012-09-23 18:08:24,418 - softwarecenter.db.pkginfo_impl.aptcache - INFO - aptcache.open()
Traceback (most recent call last):
  File "/usr/bin/software-center", line 176, in <module>
    app.run(args)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/app.py", line 1422, in run
    self.show_available_packages(args)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/app.py", line 1352, in show_available_packages
    self.view_manager.set_active_view(ViewPages.AVAILABLE)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/session/viewmanager.py", line 154, in set_active_view
    view_widget.init_view()
  File "/usr/share/software-center/softwarecenter/ui/gtk3/panes/availablepane.py", line 183, in init_view
    root_category=self.cat_view.categories[0])
IndexError: list index out of range

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: software-center 5.2.5
ProcVersionSignature: Ubuntu 3.2.0-31.50-generic 3.2.28
Uname: Linux 3.2.0-31-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu13
AptOrdering:
 software-center: Install
 software-center: Configure
Architecture: amd64
Date: Sun Sep 23 17:56:27 2012
DpkgTerminalLog:
 Preparing to replace software-center 5.2.5 (using .../software-center_5.2.6_all.deb) ...
 Unpacking replacement software-center ...
 dpkg: error processing /var/cache/apt/archives/software-center_5.2.6_all.deb (--unpack):
  trying to overwrite '/usr/share/app-install/desktop', which is also in package app-install-data-partner 12.12.04.1
DuplicateSignature:
 Unpacking replacement software-center ...
 dpkg: error processing /var/cache/apt/archives/software-center_5.2.6_all.deb (--unpack):
  trying to overwrite '/usr/share/app-install/desktop', which is also in package app-install-data-partner 12.12.04.1
ErrorMessage: trying to overwrite '/usr/share/app-install/desktop', which is also in package app-install-data-partner 12.12.04.1
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
PackageArchitecture: all
SourcePackage: software-center
Title: package software-center 5.2.5 failed to install/upgrade: trying to overwrite '/usr/share/app-install/desktop', which is also in package app-install-data-partner 12.12.04.1
UpgradeStatus: No upgrade log present (probably fresh install)