BTW, from what I understand setting the zone min limit is what most likely broke the character somehow.
One thing you could check is the zone min limit for say for some zone, add it to the porter and then let me see if King can zone without the error message.
Only other thing i can think of is in King's data file on your server he has his privledge flags set wrong which makes it so I cant zone anywhere that has a min or max level limit on zoning into it. Since you have limits in both directions on tob, hub, and takish for sure.