Pokedex randomly started crashing

[Snapper_Kins]

Hello,
So recently whenever I attempt to to open the Pokedex I get this error:

Exception: NoMethodError
Message: undefined method `[]' for nil:NilClass
PokemonPokedex:164:in `species'
PokemonPokedex:548:in `pbRefreshDexList'
PokemonPokedex:398:in `pbStartScene'
PokemonPokedex:1109:in `pbStartScreen'
PokemonPauseMenu:161:in `pbStartPokemonMenu'
PokemonPauseMenu:158:in `pbFadeOutIn'
PokemonPauseMenu:158:in `pbStartPokemonMenu'
PokemonPauseMenu:144:in `loop'
PokemonPauseMenu:264:in `pbStartPokemonMenu'
Scene_Map:194:in `call_menu'

I really have no idea why it started happening, I didn't modify the pause menu or Pokedex scripts at all. I tried copying and pasting the original, unmodified scripts (I have a backup of the unmodified essentials) just in case i had modified something, but I always get this error when I open it. I have added some New Pokemon, but the issues began before I added them.If anyone has an idea what might be causing the error please let me know!

 

[GoneForToday]

Those lines mentioned in the error message should specify precisely where the problem's at. The exception being NoMethodError, it just means that, well, there's a script trying to call up a certain method but it's not finding it. So, there are just two questions I have to ask: Have you modified any scripts at all? And what are on the lines the error message points out?

 

[Snapper_Kins]

Those lines mentioned in the error message should specify precisely where the problem's at. The exception being NoMethodError, it just means that, well, there's a script trying to call up a certain method but it's not finding it. So, there are just two questions I have to ask: Have you modified any scripts at all? And what are on the lines the error message points out?

PokemonPokedex164:
return @commands.length==0 ? 0 : @commands[self.index][0]
PokemonPokedex548:
iconspecies=@sprites["pokedex"].species
PokemonPokedex398:
pbRefreshDexList($PokemonGlobal.pokedexIndex[pbGetSavePositionIndex])
PokemonPokedex1109:
@scene.pbStartScene
PokemonPauseMenu161:
screen.pbStartScreen
PokemonPauseMenu158:
pbFadeOutIn(99999) {
PokemonPausemenu264:
end
PokemonPauseMenu141:
loop do
Scene_Map194:
sscreen.pbStartPokemonMenu


That's what's on each line. Like I said, none of those scripts were modified so I don't know whats different. I updated the icons for all of the Pokemon to XY icons, but I don't think that has to do with this error

 

[FL]

Do any icons have the size different from 128x64? Did you leave some pokémon without icon? If no try a new game. If this doesn't work check if the new pokémon have images/cries.