Minecraft 1.8 World crashes upon starting,and when creating a new world

[Walker2100]

I run 1.8 and when I start a new world or enter an existing one, minecraft crashes.I couldn't find which mod to remove..

Here's the crash report:

 

---- Minecraft Crash Report ----

// Who set us up the TNT?

 

Time: 7/24/15 5:00 PM

Description: Exception in server tick loop

 

java.util.ConcurrentModificationException

at java.util.HashMap$HashIterator.nextNode(HashMap.java:1429)

at java.util.HashMap$KeyIterator.next(HashMap.java:1453)

at com.google.common.collect.AbstractMapBasedMultimap$WrappedCollection$WrappedIterator.next(AbstractMapBasedMultimap.java:486)

at net.minecraft.util.ClassInheritanceMultiMap$2.computeNext(SourceFile:90)

at com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:143)

at com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:138)

at net.minecraft.world.World.func_175650_b(World.java:3126)

at net.minecraft.world.chunk.Chunk.func_76631_c(Chunk.java:952)

at net.minecraftforge.common.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:46)

at net.minecraftforge.common.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:12)

at net.minecraftforge.common.util.AsynchronousExecutor.skipQueue(AsynchronousExecutor.java:344)

at net.minecraftforge.common.util.AsynchronousExecutor.getSkipQueue(AsynchronousExecutor.java:302)

at net.minecraftforge.common.chunkio.ChunkIOExecutor.syncChunkLoad(ChunkIOExecutor.java:12)

at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:117)

at net.minecraft.world.gen.ChunkProviderServer.func_73158_c(ChunkProviderServer.java:92)

at net.minecraft.server.MinecraftServer.func_71222_d(MinecraftServer.java:302)

at net.minecraft.server.integrated.IntegratedServer.func_71247_a(IntegratedServer.java:112)

at net.minecraft.server.integrated.IntegratedServer.func_71197_b(IntegratedServer.java:126)

at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:438)

at java.lang.Thread.run(Thread.java:745)

 

 

A detailed walkthrough of the error, its code path and all known details is as follows:

---------------------------------------------------------------------------------------

 

-- System Details --

Details:

Minecraft Version: 1.8

Operating System: Windows 8.1 (amd64) version 6.3

Java Version: 1.8.0_25, Oracle Corporation

Java VM Version: Java HotSpot 64-Bit Server VM (mixed mode), Oracle Corporation

Memory: 223581784 bytes (213 MB) / 448806912 bytes (428 MB) up to 1060372480 bytes (1011 MB)

JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M

IntCache: cache: 13, tcache: 0, allocated: 13, tallocated: 95

FML: MCP v9.10 FML v8.0.99.99 Minecraft Forge 11.14.3.1495 23 mods loaded, 23 mods active

States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored

UCHIJAA mcp{9.05} [Minecraft Coder Pack] (minecraft.jar)

UCHIJAA FML{8.0.99.99} [Forge Mod Loader] (forge-1.8-11.14.3.1495.jar)

UCHIJAA Forge{11.14.3.1495} [Minecraft Forge] (forge-1.8-11.14.3.1495.jar)

UCHIJAA BiomesOPlenty{3.0.0} [biomes O' Plenty] (BiomesOPlenty-1.8-3.0.0.1099-universal.jar)

UCHIJAA ChickenShed{1.1.4} [Chicken Shed] ([1.8] ChickenShed (v1.2.0).jar)

UCHIJAA securitycraft{v1.7.4.1} [securityCraft] ([1.8] SecurityCraft v1.7.4.1.jar)

UCHIJAA bspkrsCore{7.01} [bspkrsCore] ([1.8]bspkrsCore-universal-7.01.jar)

UCHIJAA Treecapitator{1.8} [Treecapitator] ([1.8]Treecapitator-universal-2.0.5.jar)

UCHIJAA BBG{2.0.0} [betterBedrockGen] (BBG 1.8-2.0.0.jar)

UCHIJAA CustomSpawner{3.4.0} [DrZhark's CustomSpawner] (CustomMobSpawner 3.4.0.jar)

UCHIJAA MoCreatures{8.0.0.devA} [DrZhark's Mo'Creatures Mod] (DrZhark's Mo'Creatures Mod-8.0.0.devA.jar)

UCHIJAA ExtraFood{0.7.0} [Extra Food] (ExtraFood-1.8-0.7.24.jar)

UCHIJAA samsfooddetails{1.8-1.0.0} [Food Details] (FoodDetails-1.8-1.0.0.jar)

UCHIJAA fyberbackpack{1.0} [Just Backpacks] (justbackpacks-mc1.8-1.0.jar)

UCHIJAA RadixCore{2.0.3-1.8} [RadixCore] (RadixCore-2.0.3-1.8-universal.jar)

UCHIJAA MCA{5.0.6.1-1.8} [Minecraft Comes Alive] (MCA-5.0.6.2-1.8-universal.jar)

UCHIJAA moreplayermodels{1.8.0_beta} [MorePlayerModels] (MorePlayerModels_1.8.0_beta.jar)

UCHIJAA musicchoices{1.1_for_1.8} [Music Choices] (MusicChoices-1.1_for_1.8.jar)

UCHIJAA pam{0.0.1} [Lutronic's Pixel Art Mod] (pam-0.0.1.jar)

UCHIJAA PetBat{1.3.7} [Pet Bat] (PetBat-1.8.jar)

UCHIJAA screenshots{1.0.0} [screenshots Enhanced] (screenshots-1.0.0-1.8-hotfix.jar)

UCHIJAA ultimate_unicorn_mod{1.1.5} [Wings, Horns, and Hooves, the Ultimate Unicorn Mod!] (ultimate_unicorn_mod-1.8-1.1.5.jar)

UCHIJAA worldedit{6.1} [WorldEdit] (worldedit-forge-mc1.8-6.1.jar)

Loaded coremods (and transformers):

BOPLoadingPlugin (BiomesOPlenty-1.8-3.0.0.1099-universal.jar)

  org.spongepowered.asm.mixin.transformer.MixinTransformer

GL info: ~~ERROR~~ RuntimeException: No OpenGL context found in the current thread.

Profiler Position: N/A (disabled)

Player Count: 0 / 8; []

Type: Integrated Server (map_client.txt)

Is Modded: Definitely; Client brand changed to 'fml,forge'

[Walker2100]

One of your mods is accessing the world from a different thread, this is broken and must be fixed. You have to take out the mods one by one to find out which one it is.

Thank you. I found out what it was, and it was minecraft comes alive.