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Flashback Neoforge Fixed

Compatibility fixes for running Flashback on NeoForge 1.21.1 through Sinytra Connector.
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flashback_neoforge_fixed-1.0.9.jar

File nameflashback_neoforge_fixed-1.0.9.jar
Uploader
tatutotatuto
Uploaded
Sep 22, 2026
Downloads
126
Size
166.8 KB
Mod Loaders
NeoForge
File ID
8946411
Type
R
Release
Supported game versions
  • 1.21.1
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Curse Maven Snippet

NeoForge

implementation "curse.maven:flashback-neoforge-fixed-1671440:8946411"

Learn more about Curse Maven

What's new

Prevent startup crashes when Flashback's ReplayUI is absent, renamed, or unavailable during early Minecraft window initialization. Preserve every valid NeoForge numeric registry mapping when a mod leaves an unmapped (-1) entry, instead of dropping the entire registry snapshot. Compose the client block-entity snapshot guard with legacy Create: Flashback / Create: Aeronautics Flashback mixins instead of failing on an exclusive redirect conflict.

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