Comment 2 for bug 256930

Here is what is causing the error:

...
Download done.
Flash Plugin installed.
update-alternatives: unable to make /usr/lib/firefox/plugins/flashplugin-alternative.so.dpkg-tmp a symlink to /etc/alternatives/firefox-flashplugin: No such file or directory
dpkg: error processing flashplugin-nonfree (--configure):
 subprocess post-installation script returned error exit status 2

I reassign.