I though that they had stopped selling avast 4.8 licenses.
The idea being you download whatever avast version it is that you wish to install and the default download would be 6.0.
In saying you need it for 15 PCs what environment will these be run ?
If stand alone systems with win XP or higher then you can use avast6, but you can't use the avast 4.8 license that has changed but can be converted ?
You could also contact sales (at) avast (dot) com by email.
- avast! 5 Pro license convert from 4.8 Pro license. Try
http://www.avast.com/resend-license.php now, fill in the form giving your email and 4.8 Pro License key and they will send the new license file to you (presumably it will check you have a legit 4.8 Pro license first). Whilst this talks of avast5, avast6 also uses a license file license.avastlic.
If you are running it under a network and using the Avast Distributed Network Manager (ADNM) then the ADNM product currently only supports avast4.8 ?