unable to update AV definition after upgrade

Hello,

I have upgrade the Scan Engine from version 5 to Protection Engine version 7.0.2 on the Windows 2008 server.

I have an issue when i try to update the AV Definition of the Protection Engine. I got the following error in the web interface : Java LiveUpdate Error.

And in the windows log, i have only the following message

There was an error running content update, scanning will continue using the original definitions
Date/time of event = 2014-01-29 15:14:33
Event Severity Level = Error
Definitions = Virus definitions
Error Message = Java LiveUpdate Error
Update Method = LiveUpdate
Symantec Protection Engine IP address = XX.XX.XX.XX
Symantec Protection Engine Port number = 1344
Uptime (in seconds) = 1242

How can i resolve my issue to update the AV Definition ?

Thanks,

Barnabe