Symantec Antivirus Error on Macintosh

Hi experts,
When I attempted to install Symantec AntiVirus for Macintosh 10.0.0 on an Intel-based Macintosh I get the following error message.
I have tried to reinstall the antivirus to fix this issue but nothing did happen.
I have to resolve this issue so I need your help.
Please suggest me properly.
Thanks.

Symantec Antivirus Error
Symantec AntiVirus Auto-Protect could not continue.
Please run LiveUpdate or reinstall Symantec Antivirus and restart. (Code: 10)
