spawn group id?

[Fazzlan]

I have run into this same problem. From what I can tell, it's the length of the name that causes the problem. If an NPCs name is too long, it causes spawn problems. No idea why this is or exactly how long the names can be.

[Zengez]

Been forever since I was doing this last but as I recall I figured it out to be something along the liens of that if you have too many of one type of mob with the same name, such that the A_Small_Rat01 goes all the way to A_Small_Rat99 then you try to add another, it won't because the id gets messed up, but if you do it Angelox's way it bypasses that issue for some reason... I don't know my memory is a little fuzzy but check into that and see if it's due to the quantity of the same mob type you've put into the zone...