configure scripts fails to install plugin

[Sébastien Bernard]

Binary package hint: flashplugin-nonfree

Here's the end of the log. The script manage to download the file and install in the right position.
Then :
Flash Plugin installed.
nspluginwrapper: no appropriate viewer found for /usr/lib/flashplugin-installer/libflashplayer.so
When trying to install by hand, here the report:
nspluginwrapper -i /usr/lib/mozilla/plugins/libflashplayer.so
nspluginwrapper: /usr/lib/mozilla/plugins/libflashplayer.so is not a valid NPAPI plugin

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: flashplugin-installer 10.1.82.76ubuntu1
ProcVersionSignature: Ubuntu 2.6.35-15.21-generic 2.6.35.1
Uname: Linux 2.6.35-15-generic x86_64
Architecture: amd64
Date: Mon Aug 16 23:37:57 2010
ProcEnviron:
 LANGUAGE=fr_FR:fr:en_GB:en
 PATH=(custom, no user)
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
SourcePackage: flashplugin-nonfree

[dino99 (9d9)]

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