So I've gone through the forums quite a bit an I haven't been able to find out why my fatebot works for only 30-45 mins at a time before I have to restart the whole bot to get it to work again... So i went ahead and posted 2 logs...
The only way I can see Zekken being the culprit is if you got stuck somewhere due to avoiding a spell and the bot couldn't move out of it. When you came back to check on the game, where you in between rocks or something? Aside from that, I can't see how it would happen.