add licence to backup Exec 2012 problem

Hello All,

I have a problem when i import the licensing file .slf to Symantec Backup Exec 2012, he show me this message :

Support 64 bits requis

The current installation could not locate the required install media

Please select the path to the installation media. this path will contain a file named browser.exe or backupexecMedia.xml

Please i need your help.