Please fix the app! I tried playing 'A zoroark among us', an RPG maker XP file from Pokémons know.com and it just said this message:

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ALERT

No implicit conversion from nil to integer

Sprite_Resizer:461:in
'_initialize_SpriteResizer'
Sprite_Resizer:461:in 'initialize'
Spriteset_Map:35:in 'new'
Spriteset_Map:35

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PLEASE FIX THIS EMULATOR!