SpawnReferenceSystemsMixin-mixin.jar
17 Jan 2026
CurseForge · Hytale mod
This mod fix the following error patching hytale SpawnReferenceSystems when nullref (using https://www.curseforge.com/hytale/mods/hyxin)
Quick answer
Patch Spawn Reference Systems ( Patch Game ) SpawnReferenceSystemsMixin-mixin.jar targets Hytale. Do not install it as a separate client mod. Enable it on the world host—the local server in singleplayer or the dedicated server in multiplayer. No required dependencies listed for this file.
Where it goes
Do not install it as a separate client mod. Enable it on the world host—the local server in singleplayer or the dedicated server in multiplayer.
Put Hytale mods on the world host or dedicated server. Singleplayer runs a local server too; Hytale does not use separate client mods.
SpawnReferenceSystemsMixin-mixin.jar. Change the file and its required mods may change too.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional project dependencies. Check the creator notes before changing an existing world.
Before you install it
Built for Patch Spawn Reference Systems ( Patch Game ) SpawnReferenceSystemsMixin-mixin.jar. Pick another file and the loader, install side or required mods may change.
Use SpawnReferenceSystemsMixin-mixin.jar. It targets Hytale; another release may target a different game build or dependency set.
This file does not list any required mods. Do not add a library just because a different file uses it.
Do not install it as a separate client mod. Enable it on the world host—the local server in singleplayer or the dedicated server in multiplayer.
Use the “Get this file” button beside SpawnReferenceSystemsMixin-mixin.jar. It opens that exact file at the source.
About this project
This mod fix the following error patching hytale SpawnReferenceSystems when nullref, /!\ In the last version please intall hyxin from https://www.curseforge.com/hytale/mods/hyxin /!\ :
java.lang.NullPointerException: Cannot read the array length because "<local15>" is null at com.hypixel.hytale.server.npc.systems.SpawnReferenceSystems$MarkerAddRemoveSystem.onEntityRemove(SpawnReferenceSystems.java:166) at com.hypixel.hytale.component.Store.removeEntity(Store.java:848) at com.hypixel.hytale.component.CommandBuffer.lambda$removeEntity$0(CommandBuffer.java:292) at com.hypixel.hytale.component.CommandBuffer.consume(CommandBuffer.java:520) at com.hypixel.hytale.component.Store.addEntity(Store.java:599) at com.hypixel.hytale.component.Store.addEntity(Store.java:519) at com.hypixel.hytale.server.flock.StoredFlock.restoreNPCs(StoredFlock.java:61) at com.hypixel.hytale.server.spawning.spawnmarkers.SpawnMarkerSystems$Ticking.lambda$tick$0(SpawnMarkerSystems.java:355) at com.hypixel.hytale.component.CommandBuffer.consume(CommandBuffer.java:520) at com.hypixel.hytale.component.Store.tick(Store.java:1981) at com.hypixel.hytale.component.system.tick.ArchetypeTickingSystem.tick(ArchetypeTickingSystem.java:36) at com.hypixel.hytale.component.Store.tickInternal(Store.java:1927) at com.hypixel.hytale.component.Store.tick(Store.java:1897) at com.hypixel.hytale.server.core.universe.world.World.tick(World.java:398) at com.hypixel.hytale.server.core.util.thread.TickingThread.run(TickingThread.java:89) at java.base/java.lang.Thread.run(Thread.java:1474)
For install the mod create on root the directory earlyplugins and put the .jar inside + when you launch server use this parameters : java -jar Server/HytaleServer.jar --assets Assets.zip --accept-early-plugins

Project description from CurseForge.
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