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[Incorrect behavior] Loading multiple XMSBTs on 4.0.10 can cause all of them not to load #657

Description

@HolidayOugi

System Firmware Version

22.1.0 (Eden Emulator)

Atmosphere Version

Eden

Smash Version

13.0.5

ARCropolis Version

4.0.10

Version channel

Stable

SD card formatting

FAT32

Can this incorrect behavior be consistently reproduced?

Yes

Configuration

  • Legacy discovery
  • Modern discovery (>= 3.0.0)
  • Irrelevant/Not provided

Expected behavior

Loading a larger number of xMSBT files can cause all of them to not load on version 4.0.10.

The issue was observed with modular CSK Collection Music Packs , each has its own msg_bgm.xmsbt and msg_title.xmsbt.

The issue does not happen when only a small number of xMSBT files are loaded (Does not happen with only 2 packs loaded, does happen with 80+ of them loaded)

The only mods active on this setup are ARCropolis, the CSK Collection and the aforementioned Music Packs.

The issue does not happen on ARCropolis version 4.0.9 and 4.0.8 (Have not tested earlier versions).

Posting the whole Music Pack since the issue does not happen when loading a smaller number of packs.

Screenshot

Image

Version 4.0.10

Image

Version 4.0.9

Minimal modpack to reproduce the panic

https://drive.google.com/file/d/1NSMt8fcvZme5UIhptRFRiUQCLir0TVIF/view?usp=sharing

Activity

  1. added
    bugSomething isn't working
    incorrect behaviorThis issue describes some incorrect behavior with ARCropolis
    on Sep 19, 2026
  2. Raytwo commented on Sep 19, 2026

    @Raytwo
    Owner

    Issues are only meant for ARCropolis contributors, please read the guidelines to report an issue or suggest a change.

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