fifazz: That error is happening because you're not setting either the demon color, the demon health, or the player health.
I don't know who mentioned this, but because the bot is made to use pixel recognition, it cannot run while minimized. Also, i haven't the slightest clue on decoding the kalonline packets. I ran wireshark while playing and the packets were just... random looking data O_o
About the dead mobs issue, i know the bot attempts to attack them, and i'm trying to work on fixing that. Give it time. ^_^