Not sure exactly but when a rogue engages it tries to get behind the mob which is technically correct, but never gets the report back from MoveUtils to actual fire the strike disc.
still the only fix inside mq2bot is to change /killthis to /attack on as your AttackCommand. I am going through some plugins adding API extensions but havent made it to mq2melee to possibly interact directly with the rogues sneak attack. /killthis basically doesnt work for rogues and we arent sure why.still getting the error on rogue with not assisting and snap roll as per original post