---- Minecraft Crash Report ----
// I'm sorry, Dave.

Time: 1/23/13 4:10 PM
Description: Exception in server tick loop

java.util.ConcurrentModificationException
	at java.util.ArrayList$Itr.checkForComodification(Unknown Source)
	at java.util.ArrayList$Itr.next(Unknown Source)
	at codechicken.chunkloader.PlayerChunkViewerManager.calculateChunkChanges(PlayerChunkViewerManager.java:155)
	at codechicken.chunkloader.ChunkLoaderEventHandler.tickEnd(ChunkLoaderEventHandler.java:40)
	at cpw.mods.fml.common.SingleIntervalHandler.tickEnd(SingleIntervalHandler.java:22)
	at cpw.mods.fml.common.FMLCommonHandler.tickEnd(FMLCommonHandler.java:138)
	at cpw.mods.fml.common.FMLCommonHandler.onPostWorldTick(FMLCommonHandler.java:282)
	at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:688)
	at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:598)
	at bdz.q(IntegratedServer.java:123)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:497)
	at fy.run(SourceFile:849)


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

-- System Details --
Details:
	Minecraft Version: 1.4.6
	Operating System: Windows 7 (amd64) version 6.1
	Java Version: 1.7.0_03, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 320086024 bytes (305 MB) / 618835968 bytes (590 MB) up to 2112618496 bytes (2014 MB)
	JVM Flags: 5 total; -Xms256M -Xmx2048M -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:+AggressiveOpts
	AABB Pool Size: 4683 (262248 bytes; 0 MB) allocated, 4144 (232064 bytes; 0 MB) used
	Suspicious classes: FML and Forge are installed
	IntCache: cache: 0, tcache: 0, allocated: 3, tallocated: 63
	FML: MCP v7.25 FML v4.6.17.515 Minecraft Forge 6.5.0.489 Feed The Beast Mod Pack 58 mods loaded, 58 mods active
	mcp [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	FML [Forge Mod Loader] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	Forge [Minecraft Forge] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	mod_CodeChickenCore [CodeChicken Core] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	mod_NotEnoughItems [Not Enough Items] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	mod_ReiMinimap [mod_ReiMinimap] ([1.4.6]ReiMinimap_v3.2_06.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	BuildCraft|Core [BuildCraft] (buildcraft-A-3.3.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	BuildCraft|Builders [BC Builders] (buildcraft-A-3.3.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	BuildCraft|Energy [BC Energy] (buildcraft-A-3.3.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	BuildCraft|Factory [BC Factory] (buildcraft-A-3.3.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	BuildCraft|Transport [BC Transport] (buildcraft-A-3.3.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	BuildCraft|Silicon [BC Silicon] (buildcraft-A-3.3.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	IC2 [IndustrialCraft 2] (industrialcraft-2_1.112.170-lf.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	ChargePads [Charge Pads] (chargepads-universal-2.3.0.58.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	ChickenChunks [ChickenChunks] (ChickenChunks 1.2.1.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	CompactSolars [Compact Solar Arrays] (compactsolars-universal-1.4.6-3.2.0.21.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	ComputerCraft [ComputerCraft] (ComputerCraft1.481.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	CCTurtle [ComputerCraft Turtles] (ComputerCraft1.481.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	EE3 [Equivalent Exchange 3] (ee3-universal-pre1f.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	EnderStorage [EnderStorage] (EnderStorage 1.3.1.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	ExtrabiomesXL [ExtrabiomesXL] (ExtrabiomesXL-universal-1.4.7-3.8.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	factorization [Factorization] (Factorization-0.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	Forestry [Forestry for Minecraft] (forestry-A-1.7.0.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	GraviGun [GraviGun] (GravityGun1.4.6v1.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	IC2NuclearControl [Nuclear Control] (IC2NuclearControl-1.4.5.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	mod_InvTweaks [Inventory Tweaks] (InventoryTweaks_v1.49_(1.4.6).zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	IronChest [Iron Chest] (ironchest-universal-1.4.7-4.5.2.213.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	Millenaire [Millénaire] (millenaire4.0.0.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	MiscPeripherals [MiscPeripherals] (miscperipherals-2.3.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	GraviSuite [Gravitation Suite] (mod_zGraviSuite_1_6.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	ModularForceFieldSystem [Modular ForceField System V2] (ModularForceFieldSystemV2.2.8.2.14.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	Mystcraft [Mystcraft] (mystcraft-uni-1.4.6-0.9.5.00.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	NEIPlugins [NEI Plugins] (NEIPlugins-1.0.4.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	ObsidiPlates [Obsidian Pressure Plates] (obsidiplates-universal-1.2.0.3.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	OmniTools [OmniTools] (OmniTools-2.2.5.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	PortalGun [Portal Gun] (PortalGun1.4.7v2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	Railcraft [Railcraft] (Railcraft_1.4.6-6.13.1.0.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	RedPowerCore [RedPower] (RedPowerCore-2.0pr6.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	RedPowerBase [RP Base] (RedPowerCore-2.0pr6.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	RedPowerMachine [RP Machine] (RedPowerMechanical-2.0pr6.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	RedPowerCompat [RP Compat] (RedPowerCompat-2.0pr6.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	RedPowerWiring [RP Wiring] (RedPowerDigital-2.0pr6.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	RedPowerLogic [RP Logic] (RedPowerDigital-2.0pr6.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	RedPowerLighting [RP Lighting] (RedPowerDigital-2.0pr6.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	RedPowerWorld [RP World] (RedPowerMechanical-2.0pr6.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	RedPowerControl [RP Control] (RedPowerMechanical-2.0pr6.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	SoulShards [SoulShards] (SoulShards-v1.26-universal.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	StevesCarts [Steve's Carts] (StevesCarts2.0.0.a42.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	Thaumcraft [Thaumcraft] (Thaumcraft3.0.1c.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	ThermalExpansion [Thermal Expansion] (ThermalExpansion-2.1.6.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	ThermalExpansion|Factory [Factory] (ThermalExpansion-2.1.6.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	ThermalExpansion|Energy [Energy] (ThermalExpansion-2.1.6.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	ThermalExpansion|Transport [Transport] (ThermalExpansion-2.1.6.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	ThermalExpansion|NEI [NEI] (ThermalExpansion-NEI-2.1.6.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	WR-CBE|Core [WR-CBE Core] (WR-CBE Core 1.3.2.4.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	WR-CBE|Addons [WR-CBE Addons] (WR-CBE Addons 1.3.2.4.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	WR-CBE|RedPower [WR-CBE RedPower] (WR-CBE RedPower 1.3.2.4.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	XyCraft [XyCraft] (xycraft-universal-1.4.6-0.9.44.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 1057 (59192 bytes; 0 MB) allocated, 946 (52976 bytes; 0 MB) used
	Player Count: 1 / 8; [iq['Hawkknight88'/174, l='FTB', x=-347.69, y=74.00, z=-562.77]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Definitely; Client brand changed to 'forge,fml'