edit /var/lib/dpkg/info/flashplugin-nonfree.postinst and replace "multiuser" with "defaults". (You have to use sudo, e.g. sudo gedit /var/lib/dpkg/info/flashplugin-nonfree.postinst)
Then execute: sudo apt-get install flashplugin-nonfree
Then it is done.
edit /var/lib/ dpkg/info/ flashplugin- nonfree. postinst dpkg/info/ flashplugin- nonfree. postinst)
and replace "multiuser" with "defaults".
(You have to use sudo, e.g. sudo gedit /var/lib/
Then execute:
sudo apt-get install flashplugin-nonfree
Then it is done.