div 0 error when sabbing?

[faceoff]

With extreme stealth and malice, your 5 Undercover Agents sneak into the realm of ******* .
Warning: Division by zero in /game/stargame/stargatewars.com/vsys.php on line 928

Your Undercover Agents move stealthily through the lands of ******* undetected, leaving a trail of destruction.

4 of your Undercover Agents returned to provide this report.

Your Chief of Intelligence provides you with the information on the mission results:

could have been because I only sent 5 spies