Yes, I'm using modular tables and have it as its own mod.
I think I found (possibly) the real issue now. I was dumb and forgot an $end_multitext at the end of one of the weapon descriptions and it parsed the whole table below it (or at least tried.). Now, I'm going to try doing it all over again *sigh*. Thankfully, I only
yoinked my own multiplayer test missions from another mod finished just the Dogfight missions.
To be honest, though, I don't really want to do Coop missions, but I have made it in a way that if someone wants to make a coop mission, they can.