Are you using any type of "Web Download Accelerators" or "Download Managers"? If you are, PLEASE turn them off, as they will cause problems downloading with Zone Alarm.
Very Important - When downloading ZA PLEASE, PLEASE use I.E. 7 or 6. NO OTHER BROWSER. Somehow using Firefox or any other browser the ZA Download gets corrupt.
We are all Users here.
It is your Choice to accept or dis-regard any advice given here.
Perhaps you would be better off asking all of your Question Directly to Zone Alarm Tech support.
Thank you for your time and have a nice day!