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Cannot read property 'expParams' of undefined

BMM Archive · July 15, 2026

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Preserved forum archive. This topic stores the original first post and locally mirrored RPG Maker Web attachments when available. It is posted by the BMMPlay archive account, not by the original creator.

Original Source

Original title: Cannot read property 'expParams' of undefined
Original author: BigBoss_KSA
Original date: December 13, 2017
Source thread: https://forums.rpgmakerweb.com/threads/cannot-read-property-expparams-of-undefined.88418/
Source forum path: Game Development Engines > RPG Maker Javascript Plugins > Javascript/Plugin Support

Summary

Hello, I've encountered this error while playtesting. I think it's because I deleted some empty actor, classes and items slots from the database. but i don't know. The only thing i know is it got something to do with Yanfly's ProfileStatusPage Plug-in but i'm not sure either Here's a screenshot from the F8 thingy: View attachment 78116

Archived First Post

Hello,

I've encountered this error while playtesting. I think it's because I deleted some empty actor, classes and items slots from the database. but i don't know. The only thing i know is it got something to do with Yanfly's ProfileStatusPage Plug-in but i'm not sure either

Here's a screenshot from the F8 thingy:
View attachment 78116

Please help,
Thanks for your attention. I’m looking forward to your replies.

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#039 #rpg-maker-archive #js-support

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