[Error] Whenever I catch a Geodude in my game, this happens

[BraveTodd]

In my Pokemon game that I'm developing, I have new and old Pokemon. For the older Pokemon, like Geodude, they have different dex numbers and I changed things in the Pokemon.txt file. As far as I've seen, Geodude is the only Pokemon effected by this glitch. I'm not sure what's causing it.
This is the error:
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Pokemon Shock v2
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[Pokémon Essentials version 17.2]

Exception: RuntimeError

Message: filename is nil

SpriteWindow_sprites:30:in `initialize'

Pokemon_Sprites:223:in `new'

Pokemon_Sprites:223:in `pokemon='

Pokemon_Sprites:209:in `initialize'

TextEntry:942:in `new'

TextEntry:942:in `pbStartScene'

TextEntry:1546:in `pbStartScreen'

TextEntry:1614:in `pbEnterText'

TextEntry:1611:in `pbFadeOutIn'

TextEntry:1611:in `pbEnterText'



This exception was logged in

C:\Users\skull\Saved Games\Pokemon Shock v2\errorlog.txt.

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OK
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If someone could help me that I would be great. I adjusted their sprites and icons and it all seems right but maybe I'm missing something. Thanks!

 

[Lazy Catalyst]

When does this happen, In battle or when you test start the game?

 

[#Not Important]

You also need to change the graphics in Graphics/Battlers/

 

[Vendily]

This error is in the name entry screen. You do have an icon for Geodude in your project with the corrected id, yeah?

 

[BraveTodd]

The error was that Geodude's icon was "icon31" instead of "icon031". Thank you guys for the help! It works now