NPCs disappearing frequently
HI 

So NPC's are dissapearing on my frequently. It seems it happens when the server pop reaches 0, to get them to work again I need to reload the plugin. 
you have somthing killing them off? or another plugin that it moding a player that seems to think the npc is a player?
Ts3hosting
you have somthing killing them off? or another plugin that it moding a player that seems to think the npc is a player?

Nothing at all. The NPC's are static in a zone, there are settings so that no npcs are allowed to spawn anywhere on the map, but as I understand it this is a player prefab? The npcs are also set as invulnerable. 

I have to manually reload HumanNPC on server start, and when no one has been on (player count reached 0). 

Not sure if the latter has to do with how rust handles the server (pauses it) when no players are connected? 

sorry for the delay.. so when you first start the server none of the npc spawn.. so you restart the plugin.. when player count reaches 0 and you come back on the npc are gone again?

"settings so that no npcs are allowed to spawn anywhere on the map"
Do you have a plugin controling that of just have them disabled in the server.