Killing an npc disconnects

Tested out the plugin solo with a simple base, worked great. then did it as part of a trio, and each time any of us killed an NPC, we were disconnected from the game with a message like "npc projectile error" or something like that, couldn't screencap it fast enough. This only happened on player kills, bots dying from turrets or mines didn't cause issues.

occurs to me the error might be caused by something disallowed in the loot profile, pasted below. maybe not allowed to drop HV ammo or rockets? or the special armor?

{
  "MaxItems": 500
  "MinItems": 6,
  "items": [
    {
      "item": "ammo.rifle.hv",
      "skin": 0,
      "name": null,
      "amountMax": 128,
      "amountMin": 1,
      "location": "containerMain"
    },
    {
      "item": "ammo.rifle.hv",
      "skin": 0,
      "name": null,
      "amountMax": 128,
      "amountMin": 1,
      "location": "containerMain"
    },
    {
      "item": "ammo.rocket.hv",
      "skin": 0,
      "name": null,
      "amountMax": 3,
      "amountMin": 1,
      "location": "containerMain"
    },
    {
      "item": "bandage",
      "skin": 0,
      "name": null,
      "amountMax": 3,
      "amountMin": 1,
      "location": "containerBelt"
    },
    {
      "item": "syringe.medical",
      "skin": 0,
      "name": null,
      "amountMax": 2,
      "amountMin": 1,
      "location": "containerBelt"
    },
    {
      "item": "rifle.ak",
      "skin": 0,
      "name": null,
      "amountMax": 1,
      "amountMin": 1,
      "location": "containerBelt"
    },
    {
      "item": "hoodie",
      "skin": 0,
      "name": null,
      "amountMax": 1,
      "amountMin": 1,
      "location": "containerWear"
    },
    {
      "item": "pants",
      "skin": 0,
      "name": null,
      "amountMax": 1,
      "amountMin": 1,
      "location": "containerWear"
    },
    {
      "item": "tactical.gloves",
      "skin": 0,
      "name": null,
      "amountMax": 1,
      "amountMin": 1,
      "location": "containerWear"
    },
    {
      "item": "ballistic.helmet",
      "skin": 0,
      "name": null,
      "amountMax": 1,
      "amountMin": 1,
      "location": "containerWear"
    },
    {
      "item": "ballistic.legarmor",
      "skin": 0,
      "name": null,
      "amountMax": 1,
      "amountMin": 1,
      "location": "containerWear"
    },
    {
      "item": "largebackpack",
      "skin": 0,
      "name": null,
      "amountMax": 1,
      "amountMin": 1,
      "location": "containerWear"
    },
    {
      "item": "ballistic.vest",
      "skin": 0,
      "name": null,
      "amountMax": 1,
      "amountMin": 1,
      "location": "containerWear"
    },
    {
      "item": "shoes.boots",
      "skin": 0,
      "name": null,
      "amountMax": 1,
      "amountMin": 1,
      "location": "containerWear"
    }
  ]
}