Looks like it is designed to abort if it detects something that might compromise the integrity of the license checks.
NOTE: See the section titled IV. Firewall, Anti-virus, Anti-spyware applications starting at the bottom of page 4 in the previous URL link for a detailed solution to this issue from Aladdin Knowledge Systems support.
McAfee Knowledge Base, KB66385.
KB66114 in the McAfee Knowledge Base...