package flashplugin-installer 10.3.183.10ubuntu5 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Exquisite Dead Guy]

When running apt-get upgrade

ProblemType: Package
DistroRelease: Ubuntu 11.10
Package: flashplugin-installer 10.3.183.10ubuntu5
ProcVersionSignature: Ubuntu 3.0.0-12.19-generic 3.0.4
Uname: Linux 3.0.0-12-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 1.23-0ubuntu2
Architecture: amd64
Date: Tue Oct 4 12:10:20 2011
DpkgHistoryLog:
 Start-Date: 2011-10-04 12:09:35
 Commandline: aptdaemon role='role-commit-packages' sender=':1.74'
 Upgrade: ubuntu-artwork:amd64 (53.9, 54), compiz-plugins-default:amd64 (0.9.6+bzr20110929-0ubuntu2, 0.9.6+bzr20110929-0ubuntu3), libgnome-desktop-3-2:amd64 (3.2.0-0ubuntu2, 3.2.0-0ubuntu3), lightdm-gtk-greeter:amd64 (1.0.0-0ubuntu4, 1.0.1-0ubuntu1), language-pack-gnome-en:amd64 (11.10+20110905, 11.10+20110926), lightdm:amd64 (1.0.0-0ubuntu4, 1.0.1-0ubuntu1), gnome-desktop3-data:amd64 (3.2.0-0ubuntu2, 3.2.0-0ubuntu3), compiz-gnome:amd64 (0.9.6+bzr20110929-0ubuntu2, 0.9.6+bzr20110929-0ubuntu3), compiz-plugins:amd64 (0.9.6+bzr20110929-0ubuntu2, 0.9.6+bzr20110929-0ubuntu3), libdecoration0:amd64 (0.9.6+bzr20110929-0ubuntu2, 0.9.6+bzr20110929-0ubuntu3), liblightdm-gobject-1-0:amd64 (1.0.0-0ubuntu4, 1.0.1-0ubuntu1), openssl:amd64 (1.0.0e-2ubuntu2, 1.0.0e-2ubuntu3), compiz:amd64 (0.9.6+bzr20110929-0ubuntu2, 0.9.6+bzr20110929-0ubuntu3), compiz-core:amd64 (0.9.6+bzr20110929-0ubuntu2, 0.9.6+bzr20110929-0ubuntu3), language-pack-en:amd64 (11.10+20110905, 11.10+20110926), libssl1.0.0:amd64 (1.0.0e-2ubuntu2, 1.0.0e-2ubuntu 3), libssl1.0.0:i386 (1.0.0e-2ubuntu2, 1.0.0e-2ubuntu3)
DuplicateSignature:
 Setting up flashplugin-installer (10.3.183.10ubuntu5) ...
 nspluginwrapper: /usr/lib/flashplugin-installer/libflashplayer.so is not a valid NPAPI plugin
 dpkg: error processing flashplugin-installer (--configure):
  subprocess installed post-installation script returned error exit status 1
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
SourcePackage: flashplugin-nonfree
Title: package flashplugin-installer 10.3.183.10ubuntu5 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: Upgraded to oneiric on 2011-10-04 (0 days ago)

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make Ubuntu better. This particular crash has already been reported and is a duplicate of bug #861584, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.