I would assume if you didn't extract some of the assets with Japanese names correctly it would bring up a file not found error...
Eh you could try suppressing the error with this
Script [WF-RGSS] Exit-EX
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I originally seen it in
Monster Girl Quest Paradox but it tends to be better at catching and reporting errors then then defacto RPG Maker VX Ace environment. It should also create a log called 'errors.txt' in the Main Game Directory.
It also has a bit of error handling code I did for
Princess & Conques. That dev kept forgetting assets so if it can't find an asset it just blanks it out.
For the lols this includes
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which doesn't do much unless you run the game in the Debug Environment.