Script error with battles (Essentials v18.1)

[Captain Falinks]

Hello, everyone.

Sorry to be a bother, I hope this specific thread was not brought up already.
I'm kind of a total newbie when it comes to script editing and I'm having a really hard time with an issue for my game.

I recently upgraded to Pokémon Essentials v18.1, and so far so good. Nothing out of the ordinary happens to events or game mechanics.

The problem arises during battles against specific Pokémon, them being either wild or belonging to any trainer.
When facing a Pokémon, specifically any Pokémon from generation VI to VIII (the game data of gen VI and VII were already in the PBS files, I manually added those of gen VIII), an error screen appears when the Pokémon is defeated.
It reads like this:
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Pokemon Essentials
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[Pokémon Essentials version 18.1]

Exception: TypeError

Message: nil can't be coerced into Fixnum



Backtrace:

Audio_Utilities:1167:in `*'

Audio_Utilities:1167:in `getPlayTime2'

Audio_Utilities:1111:in `open'

Audio_Utilities:1111:in `getPlayTime2'

Audio_Utilities:1090:in `getPlayTime'

PSystem_FileUtilities:445:in `pbCryFrameLength'

PokeBattle_SceneAnimations:674:in `createProcesses'

PokeBattle_Animation:9:in `initialize'

PokeBattle_SceneAnimations:652:in `initialize'

Scene_Animations:291:in `new'



This exception was logged in

C:\Users\USERNAME\Saved Games\Pokemon Essentials\errorlog.txt.

Press Ctrl+C to copy this message to the clipboard.
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When it happens, the battle ends in case the Pokémon is a wild one. Experience points are not given and the game continues treating it as a win.
When the same thing happens during a trainer battle, then the active ally Pokémon is forced to repeat the same move it used to K.O. the enemy, but with no target whatsoever. The enemy, with 0 HP, does not leave the battlefield until the enemy trainer replaces it.
If it was the last Pokémon, then the battle ends and it is treated ad a win, the trainer appears and says their line, but the enemy Pokémon is still there.
Experience points are not given, either.

I really can't get myself to understand what the problem is, I don't think I am competent enough to fix this on my own.
Does anyone have a solution? Did something like this happen to anyone else?

 

[Pyxal]

Hey! Moved your post here since you posted in the wrong section!

 

[Captain Falinks]

You are perfectly right, I apologize for the inconvenience.
I opened up the same thread in the right section, hopefully I won't mess up again!