Problem With Modded Server.
I have a modded server. I run the A Wolf Server that's been up for a shot while. I wanted more players so I introduced a mod onto the server. Problem, I had to shut down the mod because unless you had it, you would crash. I want to know how to make it optional. I created a new system which works fine. But unless the player has the mod, they crash. So how do I make it optional?