Norton AntiVirus Error Message for MAC

I have read similar posts. I started installing NAV MAC 11.0 but realized halfway through that it was licensed for only one computer. Now I am receiving a constant error message of - "Norton AntiVirus Auto-Protect could not continue. Please run LiveUpdate or reinstall Norton AntiVirus and restart. (Code:10)

 

I have removed and deleted anything related to this product yet I am still receiving these messages. How can I stop them or turn them off? I am running OS 10.6.8

 

Thanks!