Crash upon entering Route 203

[Dewgonger]

Hey everyone, this is my first post here, but I kinda need the help.
In the file attached to this, I've drafted an experimental version of a ROM I'm planning to make.

Problem is, it's very hard to playtest, when the game suddenly just stops all functions upon entering route 203.

I have NO idea how to fix this. I haven't messed around with a lot, only encounters in the routes leading up to Route 203, Pokémon typings and learnsets, and gym leaders that are way later in the game. If anyone wants to give it a whip and see the crash for themselves, you can.

This was made with PPRE1 by the way, Pokémon Platinum. It was made with a functional ROM I have used to play through normally.

If you have any ideas how to fix this, I'd love to hear it.

Thanks in advance!

-rom removed-

 

InfinityPlatinum.ips

Edited March 3, 2019 by Dewgonger
Didn't know you couldn't just insert ROMS. Trying an IPS file.

[theSLAYER]

@Dewgonger it is against the rules of our forums to link to roms, and as a result, the rom in your link has been removed.
You may attach patches (example, an ips patch) that can be derived from comparing your version of the game, to a standard unmodified game.