iChun mods crash report - thes7274473

---- Minecraft Crash Report ----
// Oops.

Time: 6/10/14 4:05 PM
Description: Exception in server tick loop

java.util.ConcurrentModificationException
	at java.util.HashMap$HashIterator.remove(Unknown Source)
	at trailmix.common.core.TickHandlerServer.onServerTick(TickHandlerServer.java:305)
	at cpw.mods.fml.common.eventhandler.ASMEventHandler_14_TickHandlerServer_onServerTick_ServerTickEvent.invoke(.dynamic)
	at cpw.mods.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:51)
	at cpw.mods.fml.common.eventhandler.EventBus.post(EventBus.java:122)
	at cpw.mods.fml.common.FMLCommonHandler.onPostServerTick(FMLCommonHandler.java:247)
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:574)
	at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:111)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:414)
	at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:669)


A detailed walkthrough of the error, its code path and all known details is as follows:
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-- System Details --
Details:
	Minecraft Version: 1.7.2
	Operating System: Windows 7 (amd64) version 6.1
	Java Version: 1.6.0_20, Sun Microsystems Inc.
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Sun Microsystems Inc.
	Memory: 273947648 bytes (261 MB) / 539951104 bytes (514 MB) up to 954466304 bytes (910 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G
	AABB Pool Size: 3763 (210728 bytes; 0 MB) allocated, 3565 (199640 bytes; 0 MB) used
	IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
	FML: MCP v9.03 FML v7.2.207.1110 Minecraft Forge 10.12.1.1110 7 mods loaded, 7 mods active
	mcp{9.03} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
	FML{7.2.207.1110} [Forge Mod Loader] (forge-1.7.2-10.12.1.1110.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
	Forge{10.12.1.1110} [Minecraft Forge] (forge-1.7.2-10.12.1.1110.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
	iChunUtil{3.1.0} [iChunUtil] (iChunUtil-3.1.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
	Grinder{3.0.0} [Grinder] (AttachableGrinder-3.0.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
	Photoreal{3.0.0} [Photoreal] (Photoreal-3.0.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
	TrailMix{3.0.0} [TrailMix] (TrailMix-3.0.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 11983 (671048 bytes; 0 MB) allocated, 9589 (536984 bytes; 0 MB) used
	Player Count: 1 / 8; [EntityPlayerMP['thes7274473'/176, l='New World', x=77.49, y=71.78, z=337.52]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Definitely; Client brand changed to 'fml,forge'