It shouldn't matter but somehow quests may end up with different configs depending on what actions are taken during the quest, I'll just have to figure out what could have possibly be done different from what the script does, it has happened in the past with other quests and I've added some more complex stages. During Fight Arena for example, the script doesn't kill General Khazard because there is no need to so it just teleports out and finishes the quest, however some people doing it manually killed him without any reason and triggered a config incompatibility resulting in the same error but I added a fix for that long time ago. In the mean time you can still run quests on that account but by using a custom quest list