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ModRegFixer

A simple client-side mod for minecraft resolving issues where gameplay mods don't allow a player to connect to a vanilla server.
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modregfixer-1.0.0+26.2

File namemodregfixer-1.0.0-26.2.jar
Uploader
cmdralphcmdralph
Uploaded
Nov 4, 2026
Downloads
4
Size
53.0 KB
Mod Loaders
Fabric
File ID
9434652
Type
R
Release
Supported game versions
  • 26.2

Curse Maven Snippet

Fabric

modImplementation "curse.maven:modregfixer-1783462:9434652"

Learn more about Curse Maven

What's new

Release v1.0.0

The first release of ModRegFixer. It lets you join vanilla, Paper, Folia and Velocity servers with content mods like Biomes O' Plenty still installed. You no longer need a second instance or have to move jars around.

Features:

  • Fixes the Missing element ResourceKey[...] crash when you join a server that doesn't have your content mods
  • Filters each item component on its own and only for the current connection. Everything else on the item, and all your client-side mods, keep working
  • Singleplayer and modded servers that have your mods are completely unaffected
  • Client-only: servers don't need to install anything
  • Supports Minecraft 26.3, 26.2 and 26.1.x (one jar per version)
  • /modregfixer shows what was filtered on the current server and which mod it came from
  • /modregfixer report writes a full report to latest.log
  • /modregfixer debug on/off turns on verbose logging on every join
  • Config file at config/modregfixer.properties (enabled, debug, hideUnsupportedCreativeItems)
  • Hides creative-menu items the server can't know about on non-Fabric servers

Limitations:

  • Modded items (BOP's, for example) can't become usable on a vanilla server; the server simply doesn't have them.
  • A mod that defines item properties outside the standard Minecraft/Fabric methods can't be filtered. It gets the clear report instead of a fix.
  • This fixes the join crash only. A mod that genuinely needs a server-side counterpart for gameplay still needs it.

Requirements:

  • Fabric Loader 0.19.5+
  • Fabric API

Found a mod that still crashes? Please open an issue and attach your latest.log.

This mod has no additional files