In a Pokemon Black Rom, I made some regular Trainer battles into Double Battles... And it softlocks. Help?

[Unregistered_Regi]

Cutting right to the chase, it seems whenever you enable regular (non important) trainers to do a Double Battle, one of the following 2 things will occur;

A: If you talk to the trainer and start the battle, they will have no text and there will be a blank textbox, but apart from that it's fine.

B: If they engage the encounter, the game freeze's in place, which is a softlock.

I've heard multiple reasons why this occurs, but I want to know exactly what causes this so I can figure out a way to fix it. Also I'm assuming actually fixing this issue will most likely require a hex editing tool or something else complicated, so any tool recommendations? I'm absolute trubbish at hex code but I'll try my best (and also apologies if this topic is formatted incorrectly, this is the first time I've made one for this site).

I don't think it matters, but the Emulator that I'm using for my Rom Hack is DeSmuME. Latest Version. And to clarify, the Rom is a USA Pokemon Black rom.

Edited September 20, 2020 by Unregistered_Regi