So i am trying to get the Recycler mod to work with Human NPC.  I type in the Code for the NPC with the [], Without the [], with the NPC only thing turned on, off, restarted my server many times and i still cant' get the HumanNPC to work with.  Am i doing something wrong?

I'm not sure what "code" you mean and where you are trying to do this, could you provide more details?

By code, he means the npc's userID.
When you do /npc_list you can get the ID there.
I'm having the same issue. I put my NPC ID in the config

"NPCIDs": [756285150,756285000],​

        void OnUseNPC (BasePlayer npc, BasePlayer player)
        {
            if (!npcids.Contains (npc.UserIDString))
                {
                        return;
                }
            ShowBox (player, player);
        }

I inserted a Puts before the "return;" to see if the issue was with the If statement or ShowBox. The UserIDString check is false every time.
If anybody knows a fix, let me know.

Merged post

Here's a crappy workaround til the issue is fixed.

        void OnUseNPC(BasePlayer npc, BasePlayer player)
        {
            foreach (var npcid in npcids)
            {
                if (npcid.ToString() == npc.UserIDString)
                {
                    ShowBox(player, player);
                    break;
                }
            }
        }​