Need someone to confirm this error

[Xero]

I am currently helping someone else with a little script problem they have but I'm not that good in programming yet so I kinda wanna ask your help guys

So there's this error that says "undefined class/module Game_Caterpillar". I assume this means that the class Window_SaveFile is trying to refer to a class called Game_Caterpillar but it doesn't exist.

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If that is or it isn't the case, would someone oh kindly help?

[nathmatt]

an image of the error doesn't help much but that should mean you are trying to call Game_Caterpillar but it doesn't exist
example if i tried to call Game_Player after deleting that class

[ForeverZer0]

Your problem seems like it may be slightly different. If you were simlply referencing the class, I believe it would give you a NameError, then spout offf about undefined constants for the class.

You said it is occuring in Window_SaveFile?
Is it possible you are attempting to load/save data from an old file after you have made script changes?