[solved] ConcurrentModificationException crash on entity death

SanAndreaP · August 17, 2012

I have a bug with the actual Minecraft Forge 4.0.0 build 200: I've rewrote my mod to the new forge build. However, spawning entities, rendering, interacting and such does work properly now for me. The only thing I have problems with is, that when I kill one of my entities, the game crashes sometimes (not everytime when I kill these) with this error:

2012-08-17 12:19:34 [iNFO] [sTDERR] java.util.ConcurrentModificationException
2012-08-17 12:19:34 [iNFO] [sTDERR] 	at java.util.ArrayList$Itr.checkForComodification(Unknown Source)
2012-08-17 12:19:34 [iNFO] [sTDERR] 	at java.util.ArrayList$Itr.next(Unknown Source)
2012-08-17 12:19:34 [iNFO] [sTDERR] 	at net.minecraft.src.World.getCollidingBoundingBoxes(World.java:1466)
2012-08-17 12:19:34 [iNFO] [sTDERR] 	at net.minecraft.src.Entity.moveEntity(Entity.java:657)
2012-08-17 12:19:34 [iNFO] [sTDERR] 	at net.minecraft.src.EntityFX.onUpdate(EntityFX.java:114)
2012-08-17 12:19:34 [iNFO] [sTDERR] 	at net.minecraft.src.EffectRenderer.updateEffects(EffectRenderer.java:64)
2012-08-17 12:19:34 [iNFO] [sTDERR] 	at net.minecraft.client.Minecraft.runTick(Minecraft.java:1788)
2012-08-17 12:19:34 [iNFO] [sTDERR] 	at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:831)
2012-08-17 12:19:34 [iNFO] [sTDERR] 	at net.minecraft.client.Minecraft.run(Minecraft.java:761)
2012-08-17 12:19:34 [iNFO] [sTDERR] 	at java.lang.Thread.run(Unknown Source)

Here's the FML client log file:

2012-08-17 12:18:11 [iNFO] [ForgeModLoader] Forge Mod Loader version 3.0.71.289 for Minecraft client:1.3.2, server:1.3.2 loading
2012-08-17 12:18:11 [FINEST] [ForgeModLoader] All core mods are successfully located
2012-08-17 12:18:11 [FINEST] [ForgeModLoader] Discovering coremods
2012-08-17 12:18:11 [FINEST] [ForgeModLoader] Found library file argo-2.25.jar present and correct in lib dir

2012-08-17 12:18:11 [FINEST] [ForgeModLoader] Found library file guava-12.0.1.jar present and correct in lib dir

2012-08-17 12:18:11 [FINEST] [ForgeModLoader] Found library file asm-all-4.0.jar present and correct in lib dir

2012-08-17 12:18:11 [FINEST] [ForgeModLoader] Running coremod plugins
2012-08-17 12:18:11 [FINEST] [ForgeModLoader] Running coremod plugin FMLCorePlugin
2012-08-17 12:18:11 [FINEST] [ForgeModLoader] Coremod plugin FMLCorePlugin run successfully
2012-08-17 12:18:11 [FINEST] [ForgeModLoader] Running coremod plugin FMLForgePlugin
2012-08-17 12:18:11 [FINEST] [ForgeModLoader] Coremod plugin FMLForgePlugin run successfully
2012-08-17 12:18:11 [FINEST] [ForgeModLoader] Validating minecraft
2012-08-17 12:18:11 [FINEST] [ForgeModLoader] Minecraft validated, launching...
2012-08-17 12:18:12 [iNFO] [sTDOUT] 27 achievements
2012-08-17 12:18:12 [iNFO] [sTDOUT] 195 recipes
2012-08-17 12:18:12 [iNFO] [sTDOUT] Setting user: Player739, -
2012-08-17 12:18:12 [iNFO] [sTDERR] Client asked for parameter: server
2012-08-17 12:18:12 [iNFO] [sTDOUT] LWJGL Version: 2.4.2
2012-08-17 12:18:13 [iNFO] [ForgeModLoader] Attempting early MinecraftForge initialization
2012-08-17 12:18:13 [iNFO] [ForgeModLoader] Completed early MinecraftForge initialization
2012-08-17 12:18:13 [FINE] [ForgeModLoader] Building injected Mod Containers [cpw.mods.fml.common.FMLDummyContainer, net.minecraftforge.common.ForgeDummyContainer]
2012-08-17 12:18:13 [FINE] [ForgeModLoader] Attempting to load mods contained in the minecraft jar file and associated classes
2012-08-17 12:18:13 [FINE] [ForgeModLoader] Found a minecraft related directory at C:\Users\SanAndreas\Desktop\mcp_72\eclipse\Minecraft\bin, examining for mod candidates
2012-08-17 12:18:13 [FINE] [ForgeModLoader] Skipping known library file C:\Users\SanAndreas\Desktop\mcp_72\jars\bin\jinput.jar
2012-08-17 12:18:13 [FINE] [ForgeModLoader] Skipping known library file C:\Users\SanAndreas\Desktop\mcp_72\jars\bin\lwjgl_util.jar
2012-08-17 12:18:13 [FINE] [ForgeModLoader] Skipping known library file C:\Users\SanAndreas\Desktop\mcp_72\jars\bin\lwjgl.jar
2012-08-17 12:18:13 [FINE] [ForgeModLoader] Found a minecraft related file at C:\Users\SanAndreas\Desktop\mcp_72\jars\bin\minecraft.jar, examining for mod candidates
2012-08-17 12:18:13 [FINE] [ForgeModLoader] Skipping known library file C:\Users\SanAndreas\Desktop\mcp_72\lib\argo-2.25.jar
2012-08-17 12:18:13 [FINE] [ForgeModLoader] Skipping known library file C:\Users\SanAndreas\Desktop\mcp_72\lib\asm-all-4.0.jar
2012-08-17 12:18:13 [FINE] [ForgeModLoader] Skipping known library file C:\Users\SanAndreas\Desktop\mcp_72\lib\guava-12.0.1.jar
2012-08-17 12:18:13 [FINE] [ForgeModLoader] Skipping known library file C:\Users\SanAndreas\Desktop\mcp_72\jars\lib\argo-2.25.jar
2012-08-17 12:18:13 [FINE] [ForgeModLoader] Skipping known library file C:\Users\SanAndreas\Desktop\mcp_72\jars\lib\guava-12.0.1.jar
2012-08-17 12:18:13 [FINE] [ForgeModLoader] Skipping known library file C:\Users\SanAndreas\Desktop\mcp_72\jars\lib\asm-all-4.0.jar
2012-08-17 12:18:13 [FINE] [ForgeModLoader] Minecraft jar mods loaded successfully
2012-08-17 12:18:13 [iNFO] [ForgeModLoader] Searching C:\Users\SanAndreas\Desktop\mcp_72\jars\mods for mods
2012-08-17 12:18:13 [FINE] [ForgeModLoader] Examining directory bin for potential mods
2012-08-17 12:18:13 [FINEST] [ForgeModLoader] Recursing into package claymans
2012-08-17 12:18:13 [FINEST] [ForgeModLoader] Recursing into package claymans.bunny
2012-08-17 12:18:13 [FINEST] [ForgeModLoader] Recursing into package claymans.companion
2012-08-17 12:18:13 [FINEST] [ForgeModLoader] Recursing into package claymans.gecko
2012-08-17 12:18:13 [FINEST] [ForgeModLoader] Recursing into package claymans.horse
2012-08-17 12:18:13 [FINEST] [ForgeModLoader] Recursing into package claymans.icons
2012-08-17 12:18:13 [FINEST] [ForgeModLoader] Recursing into package claymans.nexus
2012-08-17 12:18:13 [FINEST] [ForgeModLoader] Recursing into package claymans.soldiers
2012-08-17 12:18:13 [FINEST] [ForgeModLoader] Recursing into package claymans.soldiers rare
2012-08-17 12:18:13 [FINEST] [ForgeModLoader] Recursing into package claymans.turtle
2012-08-17 12:18:13 [FINEST] [ForgeModLoader] Recursing into package cpw
2012-08-17 12:18:13 [FINEST] [ForgeModLoader] Recursing into package cpw.mods
2012-08-17 12:18:13 [FINEST] [ForgeModLoader] Recursing into package cpw.mods.fml
2012-08-17 12:18:13 [FINEST] [ForgeModLoader] Recursing into package cpw.mods.fml.client
2012-08-17 12:18:13 [FINEST] [ForgeModLoader] Recursing into package cpw.mods.fml.client.modloader
2012-08-17 12:18:13 [FINEST] [ForgeModLoader] Recursing into package cpw.mods.fml.client.registry
2012-08-17 12:18:13 [FINEST] [ForgeModLoader] Recursing into package cpw.mods.fml.common
2012-08-17 12:18:13 [FINEST] [ForgeModLoader] Recursing into package cpw.mods.fml.common.asm
2012-08-17 12:18:13 [FINEST] [ForgeModLoader] Recursing into package cpw.mods.fml.common.asm.transformers
2012-08-17 12:18:13 [FINEST] [ForgeModLoader] Recursing into package cpw.mods.fml.common.discovery
2012-08-17 12:18:13 [FINEST] [ForgeModLoader] Recursing into package cpw.mods.fml.common.discovery.asm
2012-08-17 12:18:13 [FINEST] [ForgeModLoader] Recursing into package cpw.mods.fml.common.event
2012-08-17 12:18:13 [FINEST] [ForgeModLoader] Recursing into package cpw.mods.fml.common.functions
2012-08-17 12:18:13 [FINEST] [ForgeModLoader] Recursing into package cpw.mods.fml.common.modloader
2012-08-17 12:18:13 [FINEST] [ForgeModLoader] Recursing into package cpw.mods.fml.common.network
2012-08-17 12:18:13 [FINEST] [ForgeModLoader] Recursing into package cpw.mods.fml.common.registry
2012-08-17 12:18:13 [FINEST] [ForgeModLoader] Recursing into package cpw.mods.fml.common.toposort
2012-08-17 12:18:13 [FINEST] [ForgeModLoader] Recursing into package cpw.mods.fml.common.versioning
2012-08-17 12:18:13 [FINEST] [ForgeModLoader] Recursing into package cpw.mods.fml.relauncher
2012-08-17 12:18:13 [FINEST] [ForgeModLoader] Recursing into package cpw.mods.fml.server
2012-08-17 12:18:13 [FINEST] [ForgeModLoader] Recursing into package ibxm
2012-08-17 12:18:13 [FINEST] [ForgeModLoader] Recursing into package net
2012-08-17 12:18:13 [FINEST] [ForgeModLoader] Recursing into package net.minecraft
2012-08-17 12:18:13 [FINEST] [ForgeModLoader] Recursing into package net.minecraft.client
2012-08-17 12:18:13 [FINEST] [ForgeModLoader] Recursing into package net.minecraft.server
2012-08-17 12:18:13 [FINEST] [ForgeModLoader] Recursing into package net.minecraft.src
2012-08-17 12:18:13 [FINE] [ForgeModLoader] Identified a FMLMod type mod net.minecraft.src.mod_ClayMan
2012-08-17 12:18:14 [FINEST] [ForgeModLoader] Recursing into package net.minecraftforge
2012-08-17 12:18:14 [FINEST] [ForgeModLoader] Recursing into package net.minecraftforge.classloading
2012-08-17 12:18:14 [FINEST] [ForgeModLoader] Recursing into package net.minecraftforge.client
2012-08-17 12:18:14 [FINEST] [ForgeModLoader] Recursing into package net.minecraftforge.client.event
2012-08-17 12:18:14 [FINEST] [ForgeModLoader] Recursing into package net.minecraftforge.client.event.sound
2012-08-17 12:18:14 [FINEST] [ForgeModLoader] Recursing into package net.minecraftforge.common
2012-08-17 12:18:14 [FINEST] [ForgeModLoader] Recursing into package net.minecraftforge.event
2012-08-17 12:18:14 [FINEST] [ForgeModLoader] Recursing into package net.minecraftforge.event.entity
2012-08-17 12:18:14 [FINEST] [ForgeModLoader] Recursing into package net.minecraftforge.event.entity.living
2012-08-17 12:18:14 [FINEST] [ForgeModLoader] Recursing into package net.minecraftforge.event.entity.minecart
2012-08-17 12:18:14 [FINEST] [ForgeModLoader] Recursing into package net.minecraftforge.event.entity.player
2012-08-17 12:18:14 [FINEST] [ForgeModLoader] Recursing into package net.minecraftforge.event.world
2012-08-17 12:18:14 [FINEST] [ForgeModLoader] Recursing into package net.minecraftforge.oredict
2012-08-17 12:18:14 [FINEST] [ForgeModLoader] Recursing into package net.minecraftforge.transformers
2012-08-17 12:18:14 [FINEST] [ForgeModLoader] Recursing into package org
2012-08-17 12:18:14 [FINEST] [ForgeModLoader] Recursing into package org.bouncycastle
2012-08-17 12:18:14 [FINEST] [ForgeModLoader] Recursing into package org.bouncycastle.asn1
2012-08-17 12:18:14 [FINEST] [ForgeModLoader] Recursing into package org.bouncycastle.asn1.bc
2012-08-17 12:18:14 [FINEST] [ForgeModLoader] Recursing into package org.bouncycastle.asn1.pkcs
2012-08-17 12:18:14 [FINEST] [ForgeModLoader] Recursing into package org.bouncycastle.crypto
2012-08-17 12:18:14 [FINEST] [ForgeModLoader] Recursing into package org.bouncycastle.crypto.engines
2012-08-17 12:18:14 [FINEST] [ForgeModLoader] Recursing into package org.bouncycastle.crypto.io
2012-08-17 12:18:14 [FINEST] [ForgeModLoader] Recursing into package org.bouncycastle.crypto.modes
2012-08-17 12:18:14 [FINEST] [ForgeModLoader] Recursing into package org.bouncycastle.crypto.params
2012-08-17 12:18:14 [FINEST] [ForgeModLoader] Recursing into package org.bouncycastle.jcajce
2012-08-17 12:18:14 [FINEST] [ForgeModLoader] Recursing into package org.bouncycastle.jcajce.provider
2012-08-17 12:18:14 [FINEST] [ForgeModLoader] Recursing into package org.bouncycastle.jcajce.provider.config
2012-08-17 12:18:14 [FINEST] [ForgeModLoader] Recursing into package org.bouncycastle.jcajce.provider.util
2012-08-17 12:18:14 [FINEST] [ForgeModLoader] Recursing into package org.bouncycastle.jce
2012-08-17 12:18:14 [FINEST] [ForgeModLoader] Recursing into package org.bouncycastle.jce.provider
2012-08-17 12:18:14 [FINEST] [ForgeModLoader] Recursing into package org.bouncycastle.util
2012-08-17 12:18:14 [FINEST] [ForgeModLoader] Recursing into package paulscode
2012-08-17 12:18:14 [FINEST] [ForgeModLoader] Recursing into package paulscode.sound
2012-08-17 12:18:14 [FINEST] [ForgeModLoader] Recursing into package paulscode.sound.codecs
2012-08-17 12:18:14 [FINE] [ForgeModLoader] Examining file minecraft.jar for potential mods
2012-08-17 12:18:14 [iNFO] [ForgeModLoader] Forge Mod Loader has identified 3 mods to load
2012-08-17 12:18:14 [FINE] [ForgeModLoader] Received a system property request ''
2012-08-17 12:18:14 [FINE] [ForgeModLoader] System property request managing the state of 0 mods
2012-08-17 12:18:14 [FINE] [ForgeModLoader] After merging, found state information for 0 mods
2012-08-17 12:18:14 [FINE] [ForgeModLoader] Verifying mod requirements are satisfied
2012-08-17 12:18:14 [FINE] [ForgeModLoader] All mod requirements are satisfied
2012-08-17 12:18:14 [FINE] [ForgeModLoader] Sorting mods into an ordered list
2012-08-17 12:18:14 [FINE] [ForgeModLoader] Mod sorting completed successfully
2012-08-17 12:18:14 [FINE] [ForgeModLoader] Mod sorting data:
2012-08-17 12:18:14 [FINE] [ForgeModLoader] 	ClaySoldiersMod(Clay Soldiers Mod): bin ()
2012-08-17 12:18:14 [FINE] [ForgeModLoader] Activating mod FML
2012-08-17 12:18:14 [FINE] [ForgeModLoader] Activating mod Forge
2012-08-17 12:18:14 [FINE] [ForgeModLoader] Enabling mod ClaySoldiersMod
2012-08-17 12:18:14 [FINE] [ForgeModLoader] Activating mod ClaySoldiersMod
2012-08-17 12:18:14 [FINER] [ForgeModLoader] Posting state event cpw.mods.fml.common.event.FMLConstructionEvent@56e9ae3 to mod FML
2012-08-17 12:18:14 [FINER] [ForgeModLoader] State event cpw.mods.fml.common.event.FMLConstructionEvent@56e9ae3 delivered to mod FML
2012-08-17 12:18:14 [FINER] [ForgeModLoader] Posting state event cpw.mods.fml.common.event.FMLConstructionEvent@56e9ae3 to mod Forge
2012-08-17 12:18:14 [FINER] [ForgeModLoader] State event cpw.mods.fml.common.event.FMLConstructionEvent@56e9ae3 delivered to mod Forge
2012-08-17 12:18:14 [FINER] [ForgeModLoader] Posting state event cpw.mods.fml.common.event.FMLConstructionEvent@56e9ae3 to mod ClaySoldiersMod
2012-08-17 12:18:14 [FINE] [ForgeModLoader] Attempting to inject @SidedProxy classes into ClaySoldiersMod
2012-08-17 12:18:14 [FINER] [ForgeModLoader] State event cpw.mods.fml.common.event.FMLConstructionEvent@56e9ae3 delivered to mod ClaySoldiersMod
2012-08-17 12:18:14 [FINER] [ForgeModLoader] Posting state event cpw.mods.fml.common.event.FMLPreInitializationEvent@631e1d43 to mod FML
2012-08-17 12:18:14 [FINER] [ForgeModLoader] State event cpw.mods.fml.common.event.FMLPreInitializationEvent@631e1d43 delivered to mod FML
2012-08-17 12:18:14 [FINER] [ForgeModLoader] Posting state event cpw.mods.fml.common.event.FMLPreInitializationEvent@631e1d43 to mod Forge
2012-08-17 12:18:14 [FINER] [ForgeModLoader] State event cpw.mods.fml.common.event.FMLPreInitializationEvent@631e1d43 delivered to mod Forge
2012-08-17 12:18:14 [FINER] [ForgeModLoader] Posting state event cpw.mods.fml.common.event.FMLPreInitializationEvent@631e1d43 to mod ClaySoldiersMod
2012-08-17 12:18:14 [iNFO] [sTDOUT] config.txt successfully readed.
2012-08-17 12:18:14 [FINER] [ForgeModLoader] State event cpw.mods.fml.common.event.FMLPreInitializationEvent@631e1d43 delivered to mod ClaySoldiersMod
2012-08-17 12:18:14 [iNFO] [sTDOUT] Starting up SoundSystem...
2012-08-17 12:18:14 [iNFO] [sTDOUT] Initializing LWJGL OpenAL
2012-08-17 12:18:14 [iNFO] [sTDOUT]     (The LWJGL binding of OpenAL.  For more information, see http://www.lwjgl.org)
2012-08-17 12:18:15 [iNFO] [sTDOUT] OpenAL initialized.
2012-08-17 12:18:15 [FINER] [ForgeModLoader] Posting state event cpw.mods.fml.common.event.FMLInitializationEvent@887d06c to mod FML
2012-08-17 12:18:15 [FINER] [ForgeModLoader] State event cpw.mods.fml.common.event.FMLInitializationEvent@887d06c delivered to mod FML
2012-08-17 12:18:15 [FINER] [ForgeModLoader] Posting state event cpw.mods.fml.common.event.FMLInitializationEvent@887d06c to mod Forge
2012-08-17 12:18:15 [FINER] [ForgeModLoader] State event cpw.mods.fml.common.event.FMLInitializationEvent@887d06c delivered to mod Forge
2012-08-17 12:18:15 [FINER] [ForgeModLoader] Posting state event cpw.mods.fml.common.event.FMLInitializationEvent@887d06c to mod ClaySoldiersMod
2012-08-17 12:18:15 [FINER] [ForgeModLoader] State event cpw.mods.fml.common.event.FMLInitializationEvent@887d06c delivered to mod ClaySoldiersMod
2012-08-17 12:18:15 [FINER] [ForgeModLoader] Posting state event cpw.mods.fml.common.event.FMLPostInitializationEvent@23c48b6d to mod FML
2012-08-17 12:18:15 [FINER] [ForgeModLoader] State event cpw.mods.fml.common.event.FMLPostInitializationEvent@23c48b6d delivered to mod FML
2012-08-17 12:18:15 [FINER] [ForgeModLoader] Posting state event cpw.mods.fml.common.event.FMLPostInitializationEvent@23c48b6d to mod Forge
2012-08-17 12:18:15 [FINER] [ForgeModLoader] State event cpw.mods.fml.common.event.FMLPostInitializationEvent@23c48b6d delivered to mod Forge
2012-08-17 12:18:15 [FINER] [ForgeModLoader] Posting state event cpw.mods.fml.common.event.FMLPostInitializationEvent@23c48b6d to mod ClaySoldiersMod
2012-08-17 12:18:15 [FINER] [ForgeModLoader] State event cpw.mods.fml.common.event.FMLPostInitializationEvent@23c48b6d delivered to mod ClaySoldiersMod
2012-08-17 12:18:15 [FINER] [ForgeModLoader] Posting state event cpw.mods.fml.common.event.FMLLoadCompleteEvent@1570621c to mod FML
2012-08-17 12:18:15 [FINER] [ForgeModLoader] State event cpw.mods.fml.common.event.FMLLoadCompleteEvent@1570621c delivered to mod FML
2012-08-17 12:18:15 [FINER] [ForgeModLoader] Posting state event cpw.mods.fml.common.event.FMLLoadCompleteEvent@1570621c to mod Forge
2012-08-17 12:18:15 [FINER] [ForgeModLoader] State event cpw.mods.fml.common.event.FMLLoadCompleteEvent@1570621c delivered to mod Forge
2012-08-17 12:18:15 [FINER] [ForgeModLoader] Posting state event cpw.mods.fml.common.event.FMLLoadCompleteEvent@1570621c to mod ClaySoldiersMod
2012-08-17 12:18:15 [FINER] [ForgeModLoader] State event cpw.mods.fml.common.event.FMLLoadCompleteEvent@1570621c delivered to mod ClaySoldiersMod
2012-08-17 12:18:15 [iNFO] [ForgeModLoader] Forge Mod Loader has successfully loaded 3 mods
2012-08-17 12:18:21 [FINER] [ForgeModLoader] Posting state event cpw.mods.fml.common.event.FMLServerStartingEvent@6454826 to mod FML
2012-08-17 12:18:21 [FINER] [ForgeModLoader] State event cpw.mods.fml.common.event.FMLServerStartingEvent@6454826 delivered to mod FML
2012-08-17 12:18:21 [FINER] [ForgeModLoader] Posting state event cpw.mods.fml.common.event.FMLServerStartingEvent@6454826 to mod Forge
2012-08-17 12:18:21 [FINER] [ForgeModLoader] State event cpw.mods.fml.common.event.FMLServerStartingEvent@6454826 delivered to mod Forge
2012-08-17 12:18:21 [FINER] [ForgeModLoader] Posting state event cpw.mods.fml.common.event.FMLServerStartingEvent@6454826 to mod ClaySoldiersMod
2012-08-17 12:18:21 [FINER] [ForgeModLoader] State event cpw.mods.fml.common.event.FMLServerStartingEvent@6454826 delivered to mod ClaySoldiersMod
2012-08-17 12:18:21 [FINER] [ForgeModLoader] Posting state event cpw.mods.fml.common.event.FMLServerStartedEvent@2e83ba01 to mod FML
2012-08-17 12:18:21 [FINER] [ForgeModLoader] State event cpw.mods.fml.common.event.FMLServerStartedEvent@2e83ba01 delivered to mod FML
2012-08-17 12:18:21 [FINER] [ForgeModLoader] Posting state event cpw.mods.fml.common.event.FMLServerStartedEvent@2e83ba01 to mod Forge
2012-08-17 12:18:21 [FINER] [ForgeModLoader] State event cpw.mods.fml.common.event.FMLServerStartedEvent@2e83ba01 delivered to mod Forge
2012-08-17 12:18:21 [FINER] [ForgeModLoader] Posting state event cpw.mods.fml.common.event.FMLServerStartedEvent@2e83ba01 to mod ClaySoldiersMod
2012-08-17 12:18:21 [FINER] [ForgeModLoader] State event cpw.mods.fml.common.event.FMLServerStartedEvent@2e83ba01 delivered to mod ClaySoldiersMod
2012-08-17 12:18:23 [iNFO] [sTDERR] java.util.ConcurrentModificationException
2012-08-17 12:18:23 [iNFO] [sTDERR] 	at java.util.ArrayList$Itr.checkForComodification(Unknown Source)
2012-08-17 12:18:23 [iNFO] [sTDERR] 	at java.util.ArrayList$Itr.next(Unknown Source)
2012-08-17 12:18:23 [iNFO] [sTDERR] 	at net.minecraft.src.World.getCollidingBoundingBoxes(World.java:1466)
2012-08-17 12:18:23 [iNFO] [sTDERR] 	at net.minecraft.src.Entity.moveEntity(Entity.java:657)
2012-08-17 12:18:23 [iNFO] [sTDERR] 	at net.minecraft.src.EntityFX.onUpdate(EntityFX.java:114)
2012-08-17 12:18:23 [iNFO] [sTDERR] 	at net.minecraft.src.EffectRenderer.updateEffects(EffectRenderer.java:64)
2012-08-17 12:18:23 [iNFO] [sTDERR] 	at net.minecraft.client.Minecraft.runTick(Minecraft.java:1788)
2012-08-17 12:18:23 [iNFO] [sTDERR] 	at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:831)
2012-08-17 12:18:23 [iNFO] [sTDERR] 	at net.minecraft.client.Minecraft.run(Minecraft.java:761)
2012-08-17 12:18:23 [iNFO] [sTDERR] 	at java.lang.Thread.run(Unknown Source)
2012-08-17 12:18:23 [FINER] [ForgeModLoader] Posting state event cpw.mods.fml.common.event.FMLServerStoppingEvent@2a395ead to mod FML
2012-08-17 12:18:23 [FINER] [ForgeModLoader] State event cpw.mods.fml.common.event.FMLServerStoppingEvent@2a395ead delivered to mod FML
2012-08-17 12:18:23 [FINER] [ForgeModLoader] Posting state event cpw.mods.fml.common.event.FMLServerStoppingEvent@2a395ead to mod Forge
2012-08-17 12:18:23 [FINER] [ForgeModLoader] State event cpw.mods.fml.common.event.FMLServerStoppingEvent@2a395ead delivered to mod Forge
2012-08-17 12:18:23 [FINER] [ForgeModLoader] Posting state event cpw.mods.fml.common.event.FMLServerStoppingEvent@2a395ead to mod ClaySoldiersMod
2012-08-17 12:18:23 [FINER] [ForgeModLoader] State event cpw.mods.fml.common.event.FMLServerStoppingEvent@2a395ead delivered to mod ClaySoldiersMod

If I kill the same entities on a server, it doesn't happen, neither on the client nor on the server. On client-only, it's the same error and I dunno what's causing it.

Here's my mod_ file, if anybody needs it:

https://gist.github.com/4e3d7b2b13bb339601b7

BTW: My entity type implements IAnimal and uses currently the attackEntityFrom(...) method from the superclass (EntityCreature). Instead of this, there's no method in my entity class, which will be called on hit / death.

Some more infos:

Minecraft ver. 1.3.2 (final)
Minecraft Server ver. 1.3.2 (final)
MCP v.7.2

pitman-87 · August 17, 2012

I had this issue with modloader and it was caused when I got an entitylist and iterated over it.

The reason is, that you somewhere in your server-tick called a entitylist (or something) from the clientworld (or vice versa).

Serverticks and clientticks are running in different threads (FIY).

LexManos · August 17, 2012

I need to see your entity class, and anything that calls world.getEntitiesWithinAABBExcludingEntity if you do.

SanAndreaP · August 17, 2012

I need to see your entity class, and anything that calls world.getEntitiesWithinAABBExcludingEntity if you do.

Here ya go:

https://gist.github.com/f876fb64b62074d7791c

it is HUGE and it's messy (I've cleaned that up since I overtook the mod from KodaichiZero a bit). There are 3 lines where I called worldObj.getEntitiesWithinAABBExcludingEntity at line 643, 1210 and 1627. Even when I outcomment the code which uses this method and it crashes anyway.

pitman-87 · August 17, 2012

I need to see your entity class, and anything that calls world.getEntitiesWithinAABBExcludingEntity if you do.

Here ya go:

https://gist.github.com/f876fb64b62074d7791c

it is HUGE and it's messy (I've cleaned that up since I overtook the mod from KodaichiZero a bit). There are 3 lines where I called worldObj.getEntitiesWithinAABBExcludingEntity at line 643, 1210 and 1627. Even when I outcomment the code which uses this method and it crashes anyway.

Remember, everything is called twice (server and client)

check if it's called in client world and don't execute the code in this method:

on top of the code:

if(world.isRemote){
return;
}

SanAndreaP · August 17, 2012

I need to see your entity class, and anything that calls world.getEntitiesWithinAABBExcludingEntity if you do.

Here ya go:

https://gist.github.com/f876fb64b62074d7791c

it is HUGE and it's messy (I've cleaned that up since I overtook the mod from KodaichiZero a bit). There are 3 lines where I called worldObj.getEntitiesWithinAABBExcludingEntity at line 643, 1210 and 1627. Even when I outcomment the code which uses this method and it crashes anyway.

Remember, everything is called twice (server and client)

check if it's called in client world and don't execute the code in this method:

on top of the code:
if(world.isRemote){
return;
}

Well, it has nothing to do with the list stuff, nor with code which are called twice. I checked my code again and found the crash maker. It's this:

if(FMLCommonHandler.instance().getSide().equals(Side.CLIENT))
FMLClientHandler.instance().getClient().effectRenderer.addEffect(new EntityDiggingFX(worldObj, a, b, c, 0.0D, 0.0D, 0.0D, Block.cloth, 0, teamCloth(getClayTeam())));

on line 2669 in the method attackEntityFrom();

Is there a similar way to spawn custom particles?

SanAndreaP · August 18, 2012

Sorry for DP, but I played around and did some code-fixing in my mod and I can clearly confirm it is the method

FMLClientHandler.instance().getClient().effectRenderer.addEffect( [new entityFX instance] );

I tried also following:

Minecraft.getMinecraft().effectRenderer.addEffect( [new entityFX instance] );

With or without checking if it's client-sided or not. I get often (not everytime) the error in the OP. If it doesn't crash I can see the particles properly.

If I use this instead:

this.worldObj.spawnParticle("reddust", a, b, c, 0.0D, 0.0D, 0.0D);

it doesn't crash but it doesn't show any particles either.

Also I tried this whole thing on a dedicated server.

It doesn't crash in any case with any method, but it doesn't show me particles either.

So did I do something wrong or is this a bug?

Viper283 · August 18, 2012

just a heads up, you'll need to change the package that your mod file is in, as of build 204 FML with crash if there are any files in the net.minecraft.src or a sub-package of it

SanAndreaP · August 19, 2012

just a heads up, you'll need to change the package that your mod file is in, as of build 204 FML with crash if there are any files in the net.minecraft.src or a sub-package of it

I did that already (FML spammed me because of that). Package is now SanAndreasP.mods.ClaySoldierMod, but that didn't solve my problem. I still get the same error.

LexManos · August 19, 2012

at net.minecraft.src.World.getCollidingBoundingBoxes(World.java:1466)

You'll see a collection on this line, that is being itterated over.

Somewhere inside of that loop, you are modifying the thing that's being itterated over.

You're gunna have to figure out what your in code is called, that edit that collection.

SanAndreaP · August 19, 2012

at net.minecraft.src.World.getCollidingBoundingBoxes(World.java:1466)

You'll see a collection on this line, that is being itterated over.

Somewhere inside of that loop, you are modifying the thing that's being itterated over.

You're gunna have to figure out what your in code is called, that edit that collection.

If it would be so easy

I've tried everything now...

- outcomment all code with "boundingBox" and "axisalignedbb" doesn't work

- outcomment all overridden methods (such as onUpdate() aso.) except attackEntityFrom(...), which now spawns only the particles and returns super.attackEntityFrom(...) (the rest inside it is outcommented)

- create a completely new entity, which spawns continously particles and isn't related to anything in my mod (except the spawn item)

It crashes with the same error.

- using the worldObj.spawnParticle(...) in the new entity, which doesn't crash, but doesn't spawn anything either.

Has this something to do with the worldObj field? Because both particle spawn things uses it. This is the spawning item code, if it's necessary:

https://gist.github.com/9088b8e72638205dd129

SanAndreaP · August 20, 2012

Okay, I think I solved the problem now. As I thought it was the worldObj field from the entity I've used. I'm using now Minecraft.getMinecraft().theWorld instead and no crash so far.

Here's the code which I'm using to spawn custom digging particles now:

if(FMLCommonHandler.instance().getSide().isClient())
    Minecraft.getMinecraft().effectRenderer.addEffect( new EntityDiggingFX(Minecraft.getMinecraft().theWorld /* use this instead of this.worldObj */, X, Y, Z, 0.0D, 0.0D, 0.0D, Block.cloth, 0, teamCloth(getDataWatcherShort("clayTeam"))));

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[solved] ConcurrentModificationException crash on entity death

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