ModsFinder

Create OBB Collision Crash Fix

by BlazeyCrazey

Create OBB Collision Crash Fix is a NeoForge server patch that stops a crash in Create's contraption collision code for Minecraft 1.21.1.

NeoForgeServer-side onlyMIT License1.21.1

What it does

Version 6.0.10 of Create could crash a server with a NullPointerException in the contraption collision routine ContinuousOBBCollider.collideMany. This mod applies a single mixin that guards that dereference and leaves Create's own logic unchanged. Create is required, and the server needs this mod installed; the fix runs on the server only. The mod is published for NeoForge 1.21.1, with version 1.0.0 dated 2026-06-25. It is released under the MIT License and is not open source.

Key features

  1. Guarded dereference

    A single mixin adds a guard where the crash occurred, so moving contraptions no longer stop the server.

  2. Minimal overhead

    Beyond the guard, the added runtime cost is small, since the mixin only checks one code path.

  3. Create logic untouched

    Create's behavior is not modified, so its contraptions and collisions work as before when the crash does not occur.

Compatibility

Latest build for each game version and loader.

1.21.11.0.0
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

CreateAesthetic Technology that empowers the Player
Required

Questions

Does Create OBB Collision Crash Fix need Create?

Yes. Create is a required dependency and must be installed alongside this mod on NeoForge 1.21.1.

Does the mod have to be installed on clients?

No. It runs on the server alone, so players need nothing extra to join.

In the catalog

Create OBB Collision Crash Fix is one of 3,514 Library mods on ModsFinder, and one of 1,449 Library mods for NeoForge. 32,366 mods support Minecraft 1.21.1.

Library mods3,514NeoForge modsMods for 1.21.132,366

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What the author says

java.lang.NullPointerException: Cannot read field "x" because "mf.axis" is null at...ContinuousOBBCollider.collideMany(ContinuousOBBCollider.java:153) This mod uses a Mixin to intercept the two null-prone field reads (axis and normalAxis) and substitutes Vec3.ZERO when they're null. A zero vector makes that frame's…
BlazeyCrazey, on the Modrinth page

Official listing

Owner
BlazeyCrazey
Published
2026-06-25
Updated on Modrinth
2026-06-25
Facts verified
2026-10-15

Tags

LibraryManagementUtility
Open on ModrinthCompare