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Yanfly Message Core causing a crash

BMM Archive · July 15, 2026

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: Yanfly Message Core causing a crash
  • Original author: ndralcasid
  • Original date: October 29, 2015
  • Source thread: https://forums.rpgmakerweb.com/threads/yanfly-message-core-causing-a-crash.48192/
  • Source forum path: Game Development Engines > RPG Maker Javascript Plugins > Javascript/Plugin Support

Summary

I just tested and the game crashes when an Input Number is placed right after a text with it's message window placed in the middle.  It gives out the following error as shown in the attachement: ReferenceError​messageY is not defined​ My message Core is at the latest version and the chain of commands work when the plugin is turned off.  Here's the console. ReferenceError: messageY is not defined

Archived First Post

I just tested and the game crashes when an Input Number is placed right after a text with it's message window placed in the middle.  It gives out the following error as shown in the attachement:

ReferenceError
messageY is not defined​

My message Core is at the latest version and the chain of commands work when the plugin is turned off.  Here's the console.

ReferenceError: messageY is not defined

    at Window_NumberInput.updatePlacement (file:///C:/Users/Alex/Documents/Games/Actual%20Project/js/plugins/YEP_MessageCore.js:738:8)

    at Window_NumberInput.start (file:///C:/Users/Alex/Documents/Games/Actual%20Project/js/rpg_windows.js:3970:10)

    at Window_Message.startInput (file:///C:/Users/Alex/Documents/Games/Actual%20Project/js/rpg_windows.js:4440:28)

    at Window_Message.onEndOfText (file:///C:/Users/Alex/Documents/Games/Actual%20Project/js/rpg_windows.js:4425:15)

    at Window_Message.updateMessage (file:///C:/Users/Alex/Documents/Games/Actual%20Project/js/rpg_windows.js:4416:18)

    at Window_Message.update (file:///C:/Users/Alex/Documents/Games/Actual%20Project/js/rpg_windows.js:4304:25)

    at file:///C:/Users/Alex/Documents/Games/Actual%20Project/js/rpg_core.js:5734:19

    at Array.forEach (native)

    at WindowLayer.update (file:///C:/Users/Alex/Documents/Games/Actual%20Project/js/rpg_core.js:5732:19)

    at file:///C:/Users/Alex/Documents/Games/Actual%20Project/js/rpg_scenes.js:112:19

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Referenced Images / Attachments

Yanfly Error.png
Yanfly Error.png
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#039#rpg-maker-archive#js-support

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