[Sleeman]

can u please tell me what error it gives you ???? error name descriptin anyythnig?

Nothing happen. No screen. No message error. Nothing. I check in the process windows and I have 2 Armitage process. They run and sleep and run and sleep.

Thank for your help by the way !

Here is an answer for you
http://www.fastandeasyhacking.com/manual

2.3 BackTrack Linux
BackTrack Linux is no longer a supported environment for Armitage. Please move over to Kali Linux.
If you want to continue to use BackTrack Linux, you must uninstall the Metasploit Framework and install the latest dependencies. Due to dependency changes (far outside of my control) in the framework, your BackTrack Linux environment will not work if you update Metasploit.
To uninstall the Metasploit Framework:
cd /opt/metasploit
./uninstall

So i've got it !

1: I've uninstall metasploit with
-cd /opt/metasploit
./uninstall

2: Download the latest metaspoit here Metasploit
-After the download go where the file is and enter this command : # chmod u+x /root/metasploit-latest-linux-installer.run

-Run the installer with : # ./metasploit-latest-linux-installer.run

-After the installation go to https://localhost:3790/ in your browser and register you and enter you license key (give in e-mail).

3: Do a metasploit update.
# msfconsole
# sudo msfupdate

4: Install the latest armitage.
-Go here to download armitage.

-Go to the download location and use this to tar the file : tar -zxvf data.tar.gz

5: Execute armitage.
-Go to the armitage folder and start it with : ./armitage

Thanks