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

[bendo]

I upgraded from ubuntu 11.04 to 11.10 through update manager. I ran the command update-manager -d. Near the end of the process, I was greeted with the error that flash could not be installed and shortly there after, my touchpad stopped working and I had to force a reboot. I tried to run dpkg but still could not install flash.

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
ApportVersion: 1.23-0ubuntu2
AptOrdering:
 google-chrome-stable: Install
 google-talkplugin: Install
 flashplugin-installer: Configure
 google-chrome-stable: Configure
 google-talkplugin: Configure
Architecture: amd64
Date: Sat Oct 1 18:19:58 2011
DpkgHistoryLog:
 Start-Date: 2011-10-01 18:19:37
 Commandline: aptdaemon role='role-commit-packages' sender=':1.108'
 Upgrade: google-chrome-stable:amd64 (12.0.742.100-r88853, 14.0.835.186-r101821), google-talkplugin:amd64 (2.1.6.0-1, 2.3.2.0-1)
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 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
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 2011-10-01 (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.