After upgrade my Ubuntu 11.10 to the new Ubuntu 12.04 LTS almost everything worked perfectly.
The first thing I notice was that some of the shell extentions I had didn’t work (Alternate Menu). But that was not an issue.
The real issue was that the installation of Adobe Flash Player run successfully but the installation of flash plugin didn’t work that well…it raised the following error:
Failure to download extra dat file Name-or.UTF-8
After days of research, yesterday I found a question on Launchpad.net related to Ubuntu 12.04 Beta2 Adobe Flash Player Update issue.
Turns out that the solution to that issue, was the solution to my issue.
Here’s the commands to solve Adobe Flash Player Plugin installation on Ubuntu 12.04 LTS:
sudo apt-get --purge remove adobe-flash-properties-gtk adobe-flashplugin sudo dpkg -P flashplugin-installer sudo apt-get --purge autoremove sudo apt-get update sudo apt-get upgrade sudo apt-get install adobe-flashplugin
I hope it was useful!!!