ModsFinder

MMR Random Fix

by KuDikan

MMR Random Fix corrects several bugs in Modular Machinery Reborn, the machine framework it depends on, for NeoForge 1.21.1.

NeoForgeClient and serverAll rights reserved1.21.1

What it does

The fix addresses three reported problems in Modular Machinery Reborn: a crash in the preview interface caused by accessing LegacyRandomSource from multiple threads, and items in required lists that were not displayed correctly because of the 64-item stack limit. With the fix in place, those screens work as intended. Modular Machinery Reborn is required and must be installed alongside it. A server running it needs every connecting player to have it too. Files are published for NeoForge 1.21.1 only, with 1.0.1 as the latest file from 2026-05-18. The mod is released under All rights reserved and is not open source.

Key features

  1. Preview crash fix

    Stops the preview interface from crashing when it reads random values across multiple threads.

  2. Full stack display

    Required items are shown with their correct counts instead of being capped at a stack of 64.

  3. Modular Machinery fixes

    Corrects several bugs in Modular Machinery Reborn without changing its core machine recipes.

Compatibility

Latest build for each game version and loader.

1.21.11.0.1
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Requirements

Dependencies declared by the latest file for each loader.

Required 1

Modular Machinery RebornModular Machinery Reborn port of the original Modular Machinery for 1.12.2
Required

How it compares

Full comparison

Modular Machinery Reborn Create is open source under the GNU Lesser General Public License v3.0 only, for NeoForge 1.21.1 with client and server installs. Matt's Modular Armory is not open source, is licensed as All rights reserved, and is published for Forge and NeoForge 1.21.1 with client and server installs.

ModLoadersGame versionsEnvironmentUpdated
MMR Random FixNeoForge1.21.1Client and server2026-05-18
Modular Machinery Reborn CreateNeoForge1.21.1Client and server2026-05-05
Matt's Modular ArmoryForge and NeoForge1.21.1Client and server2026-10-13

Questions

Does MMR Random Fix need Modular Machinery Reborn?

Yes. Modular Machinery Reborn is a required dependency and must be installed for MMR Random Fix to run.

In the catalog

MMR Random Fix is one of 8,499 Technology mods on ModsFinder, and one of 3,557 Technology mods for NeoForge. 32,366 mods support Minecraft 1.21.1.

Technology mods8,499NeoForge modsMods for 1.21.132,366

More from KuDikan

All projects
Extended Compressor1.20.1 – 26.1.2AlwaysOpenWaterNeoforge1.21.1Modern Industrialization Item Hatch Stack Upgrade1.21.1Modern Industrialization Parallel Control Hatch1.21.1Modern Industrialization Item-Fluid Combined Hatch1.21.1Modern Industrialization Multi-Slot Fluid Hatch1.21.1

Similar mods

Create1.18.2 – 1.21.1Quark1.9.4 – 1.21.1GraveStone Mod1.19 – 26.3Create Big Cannons1.18.2 – 1.21.1GD656Killicon1.18.2 – 1.21.4Create: Connected1.18.2 – 1.21.1

What the author says

Now you can browse multiblock preview interfaces without crashes or missing materials.
KuDikan, on the Modrinth page

Official listing

Owner
KuDikan
Published
2026-05-18
Updated on Modrinth
2026-05-18
Facts verified
2026-10-15

Tags

TechnologyUtility
Open on ModrinthCompare