package flashplugin-downloader 11.0.1.152ubuntu1 failed to install/upgrade: ErrorMessage: subprocess installed post-installation script returned error exit status 1

[David Woodard]

Installation of upgrade from 11.04 to 11.10 aborted with the message: "The upgrade has aborted. Your system could be in an unusable state. A recovery will run now (dpkg --configure -a)."

ProblemType: Package
DistroRelease: Ubuntu 11.10
Package: flashplugin-downloader 11.0.1.152ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-11.50-generic 2.6.38.8
Uname: Linux 2.6.38-11-generic i686
ApportVersion: 1.23-0ubuntu3
Architecture: i386
Date: Tue Oct 18 07:52:51 2011
ErrorMessage: ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
SourcePackage: flashplugin-nonfree
Title: package flashplugin-downloader 11.0.1.152ubuntu1 failed to install/upgrade: ErrorMessage: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: Upgraded to oneiric on 2011-10-18 (0 days ago)

[dino99 (9d9)]

That distro have reached EOL since a while; and such problem has been resolved long time ago.