---- Minecraft Crash Report ----
// Uh... Did I do that?

Time: 1/15/13 5:56 PM
Description: Exception in server tick loop

java.util.ConcurrentModificationException
	at java.util.LinkedList$ListItr.checkForComodification(Unknown Source)
	at java.util.LinkedList$ListItr.next(Unknown Source)
	at ic2.common.AudioManagerClient.onTick(AudioManagerClient.java:105)
	at ic2.common.IC2.tickStart(IC2.java:1374)
	at cpw.mods.fml.common.SingleIntervalHandler.tickStart(SingleIntervalHandler.java:16)
	at cpw.mods.fml.common.FMLCommonHandler.tickStart(FMLCommonHandler.java:116)
	at cpw.mods.fml.common.FMLCommonHandler.onPreWorldTick(FMLCommonHandler.java:292)
	at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:652)
	at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:590)
	at bcb.q(IntegratedServer.java:110)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:497)
	at fp.run(SourceFile:818)

Relevant Details:
- Minecraft Version: 1.4.2
- Operating System: Windows 7 (x86) version 6.1
- Java Version: 1.7.0_12-ea, Oracle Corporation
- Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
- Memory: 127485960 bytes (121 MB) / 521265152 bytes (497 MB) up to 1060372480 bytes (1011 MB)
- JVM Flags: 5 total; -Xms256M -Xmx1024M -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:+AggressiveOpts
- AABB Pool Size: 3751 (210056 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
- FML: MCP v7.19 FML v4.2.18.433 Minecraft Forge 6.0.1.355 Optifine OptiFine_1.4.2_HD_U_A7 Feed The Beast Mod Pack 37 mods loaded, 37 mods active