Point Me Toward Modding Scripts?

[etchasketch64]

I just want to add pokemon to the game (not to break the game, because I love fakemon). I have figured out how to edit or replace existing pokemon, however when I add a new pokemon, I get an error. Currently what I have done is edited the montext.rb, enctext.rb, and ran the decompiler. Also I've added sprite date for the new pokemon, however I am guessing this is where the issue is, and I'm assuming I need to point toward this sprite data somewhere, but can't figure out what I need to edit so I can point my new pokemon to these sprites. 

 

Note : I've done this all with Reborn and Rejuvenation before, but never edited scripts before (I just edited the PBS files for those two games). I've also done this with Liquid Crystal, Light Platinum, Glazed, Sigma Emerald, etc. in rom hacks, so I'm not like a complete noob...but I find the file names..not obvious, and everything I've looked at has not been the correct file clearly. 

[etchasketch64]

also, here is the errorcode. By the way, if I simply change the name of my pokemon to "BULBASAUR" for example, everything works fine (as long as I get rid of the real BULBASAUR), so the problem obviously has to do with recognizing the new species names. I also found this code in this forum which I entered, and it didn't fix the problem. 

$Trainer.pokedex.refreshDex