[Battle] I'm having trouble adding the Fairy-Type to Fire Red

[Lord Shobby]

I've been working on a simple hack of FR that really just adds more variety to the catchable Pokemon in Kanto,
and I decided to add the Fairy type. Using TEE, I replaced/changed the ??? type with the fairy type, and edited the ??? icon to say Fairy in NSE.
However, I noticed that after adding in some moves and testing them out, they always reset the game after the "___ used ___!" message pops up.
And after testing it with other moves of different types, they also seemed to reset the game now that the ??? type has been changed.
Is there any way to fix this/add the Fairy type without this occurring?

I know there's Mr. DollSteak's decap and attack rombase, but I just want to add the fairy type without any extras attached.

 

[Dragonite2963]

This might help.

https://www.pokecommunity.com/threads/313872

It's probably best to not replace the ??? type. If you follow that tutorial carefully, you should have no problem adding new types, including the fairy type.