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Mystical Realms Modpack Fixes

Optional Mixin patches that fix crashes and broken behavior caused by third-party mods on the Mystical Realms modpack: Iris/Sodium, Better Party, NaN health corruption, Nether portal routing, and Dangerous NeoForge boss scaling.
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Utility Nexus Fixes (1.0.0)

File nameutility_nexus_fixes-1.21.1-neoforge-21.1.249-1.0.0.jar
Uploader
LlaGuiT0LlaGuiT0
Uploaded
Sep 9, 2026
Downloads
316
Size
1.1 MB
Mod Loaders
NeoForge
File ID
8842808
Type
R
Release
Supported game versions
  • 1.21.1

Curse Maven Snippet

NeoForge

implementation "curse.maven:mystical-realms-modpack-fixes-1678000:8842808"

Learn more about Curse Maven

What's new

v1.0.0 - First stable release (Minecraft 1.21.1)

First stable release of Utility Nexus Fixes for Minecraft 1.21.1 / NeoForge 21.1.249 (Java 21). Same code as the internal 0.0.0-beta.3; promoted to stable after running in a full modded-server pack. It is a compatibility-patch mod — it fixes crashes and broken interactions between third-party mods and adds no gameplay content.

Patches

  • Iris / Sodium compat: fixes the ClassNotFoundException: SodiumGameOptions$PerformanceSettings / MixinTransformerError crash caused by Iris 1.8.12's Sodium-compat mixin referencing a class newer Sodium builds (0.8.13+) renamed.
  • Lenient entity CustomName parse: malformed CustomName JSON in stale NBT falls back to a plain-text component instead of throwing, stopping per-tick Failed to parse entity custom name spam.
  • Configurable Log4j2 filter (BenignLogFilter): drops a small, config-controlled allow-list of benign stale-NBT / legacy-attribute log lines ([logfilter] in config/utility_nexus/fixes/config.toml). Falls back to the built-in defaults until the config is loaded, so it cannot crash mod loading.
  • Nether return-portal fix: records, per entity, which exit portal was paired with the portal you entered on an Overworld↔Nether trip and reuses it on the return trip instead of vanilla's "closest portal" search. Toggle [fixes] enableNetherReturnPortalFix (default true); mappings are in-memory only and reset on restart.

Notes

No code change relative to 0.0.0-beta.3. Verified: ./gradlew clean build is green.

JAR: utility_nexus_fixes-1.21.1-neoforge-21.1.249-1.0.0.jar

Tag: 1.21.1-neoforge-1.0.0

This mod has no additional files