Latest version, possible problem, this is happening to a lot of items, i also have the player-dlc-api installed
Failed to call hook 'ccmdKitsGridView' on plugin 'Kits v4.4.8' 
(KeyNotFoundException: The given key 'hazmatsuit.pilot' was not present 
in the dictionary.)
  at System.Collections.Generic.Dictionary`2[TKey,TValue].get_Item (TKey
 key) [0x0001e] in :0
at Oxide.Plugins.Kits+ItemData.get_ItemID () [0x00014] in :0
at Oxide.Plugins.Kits.CreateInventoryItems (BasePlayer player, Oxide.Game.Rust.Cui.CuiElementContainer container, Oxide.Plugins.Kits+GridAlignment alignment, Oxide.Plugins.Kits+ItemData[] items, System.Int32 capacity) [0x0003f] in :0
at Oxide.Plugins.Kits.CreateKitLayout (BasePlayer player, Oxide.Game.Rust.Cui.CuiElementContainer container, Oxide.Plugins.Kits+KitData+Kit kit) [0x00184] in :0
at Oxide.Plugins.Kits.OpenKitView (BasePlayer player, System.String name, System.Int32 page, System.UInt64 npcId) [0x006c2] in :0
at Oxide.Plugins.Kits.ccmdKitsGridView (ConsoleSystem+Arg arg) [0x00092] in :0
at Oxide.Plugins.Kits.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x01be2] in :0
at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <42f9bedc659b4f4786eb778d3cd58968>:0
at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000de] in :0
at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in :0

well i take it back, its happening a lot of times, all with that

hazmatsuit.pilot. when it happens i can see the items dissappear in the kit, even unrelated items

I thought that this suit was only being tested in stageing branch ?

I been using it for npc kits for seems like forever. so its in the main game for sure.

I have been using a lot of skins/items for a long time but they now show up as prohibited when I run the plugins through the "prohibited list" plugin (400 so far). I have had to adjust kits and configs accordingly.

my point was, that it should not throw a NRE

Seems that these NEW items are being introduced into the main game from stageing

Loaded plugin ZLevels Remastered v3.2.2 by nivex
[Stack Size Controller] Adding new item hazmatsuit.pilot to IndividualItemStackSize in configuration.
[Stack Size Controller] Adding new item chair.ejector.seat to IndividualItemStackSize in configuration.
[Stack Size Controller] Adding new item pilot.hazmat.box.wooden to IndividualItemStackSize in configuration.
[Stack Size Controller] Adding new item lock.code.a.pilot to IndividualItemStackSize in configuration.
[Stack Size Controller] Adding new item compass to IndividualItemStackSize in configuration.
[Stack Size Controller] Adding new item pistol.semiauto.a.m15 to IndividualItemStackSize in configuration.