package flashplugin-nonfree 10.0.1.218 really9.0.262.0ubuntu1 failed to install/upgrade: ErrorMessage: Package is in a very bad inconsistent state - you should reinstall it before attempting a removal.

Binary package hint: flashplugin-nonfree

This happened during an upgrade from Ubuntu 8.04 to 10.04, plugins in Firefox don't work, Rhythmbox won't launch I have tried to fix with the 'broken' button but always get an error that flashplugin-installer should be reinstalled before attempting removal but mark for reinstall option is not available. Dependencies libnspr4-dev and libnss3-dev are not installed

ProblemType: Package
DistroRelease: Ubuntu 10.04
Package: flashplugin-nonfree 10.0.1.218+really9.0.262.0ubuntu1
ProcVersionSignature: Ubuntu 2.6.32-22.36-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-22-generic x86_64
Architecture: amd64
Date: Fri Jun 4 23:11:05 2010
ErrorMessage: ErrorMessage: Package is in a very bad inconsistent state - you should reinstall it before attempting a removal.
SourcePackage: flashplugin-nonfree
Title: package flashplugin-nonfree 10.0.1.218+really9.0.262.0ubuntu1 failed to install/upgrade: ErrorMessage: Package is in a very bad inconsistent state - you should reinstall it before attempting a removal.