Problème inconnu solo bourré de mod

Bonjour et merci a ceux qui liront ce petit ( LARGE ) message.
Je vous expose mon problème, étant un joueur passionné de mod en tout genre, j'ai grossis a plus de 180 mod environ. Je joue essentiellement en solo et je tiens à m'excuser par avance mon incompétence à résoudre mes problèmes de crash. Je joue par le biais d'un laucher atl pour le serveur dns si je ne me trompe pas XD,
Bref, voila mon crash report

---- Minecraft Crash Report ----
// Ouch. That hurt

Time: 11/18/14 8:06 PM
Description: Ticking entity

java.util.ConcurrentModificationException
at java.util.HashMap$HashIterator.nextEntry(Unknown Source)
at java.util.HashMap$KeyIterator.next(Unknown Source)
at net.minecraft.entity.EntityLivingBase.func_70679_bo(EntityLivingBase.java:521)
at net.minecraft.entity.EntityLivingBase.func_70030_z(EntityLivingBase.java:293)
at net.minecraft.entity.EntityLiving.func_70030_z(EntityLiving.java:157)
at net.minecraft.entity.Entity.func_70071_h_(Entity.java:318)
at net.minecraft.entity.EntityLivingBase.func_70071_h_(EntityLivingBase.java:1559)
at net.minecraft.entity.EntityLiving.func_70071_h_(EntityLiving.java:206)
at net.minecraft.world.World.func_72866_a(World.java:2070)
at net.minecraft.world.WorldServer.func_72866_a(WorldServer.java:648)
at net.minecraft.world.World.func_72870_g(World.java:2034)
at net.minecraft.world.World.func_72939_s(World.java:1887)
at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:489)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:636)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:547)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:111)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:427)
at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685)


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

-- Head --
Stacktrace:
at java.util.HashMap$HashIterator.nextEntry(Unknown Source)
at java.util.HashMap$KeyIterator.next(Unknown Source)
at net.minecraft.entity.EntityLivingBase.func_70679_bo(EntityLivingBase.java:521)
at net.minecraft.entity.EntityLivingBase.func_70030_z(EntityLivingBase.java:293)
at net.minecraft.entity.EntityLiving.func_70030_z(EntityLiving.java:157)
at net.minecraft.entity.Entity.func_70071_h_(Entity.java:318)
at net.minecraft.entity.EntityLivingBase.func_70071_h_(EntityLivingBase.java:1559)
at net.minecraft.entity.EntityLiving.func_70071_h_(EntityLiving.java:206)
at net.minecraft.world.World.func_72866_a(World.java:2070)
at net.minecraft.world.WorldServer.func_72866_a(WorldServer.java:648)
at net.minecraft.world.World.func_72870_g(World.java:2034)

-- Entity being ticked --
Details:
Entity Type: Pig (net.minecraft.entity.passive.EntityPig)
Entity ID: 513
Entity Name: Cochon
Entity's Exact location: -724.45, 65.00, 31.99
Entity's Block location: World: (-725,65,31), Chunk: (at 11,4,15 in -46,1; contains blocks -736,0,16 to -721,255,31), Region: (-2,0; contains chunks -64,0 to -33,31, blocks -1024,0,0 to -513,255,511)
Entity's Momentum: 0.00, -0.08, -0.04

Stacktrace:
at net.minecraft.world.World.func_72939_s(World.java:1887)
at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:489)

Bon j'avoue que le pig au milieu lui la n'as pas fourré sa truffe faisant tout crasher car la je ne sais plus quoi faire
Merci de votre attention