---- Minecraft Crash Report ----
// I bet Cylons wouldn't have this problem.

Time: 15.03.14 13:49
Description: Handling packet

java.util.ConcurrentModificationException
	at java.util.LinkedList$ListItr.checkForComodification(Unknown Source)
	at java.util.LinkedList$ListItr.next(Unknown Source)
	at com.google.common.collect.Iterators$9.next(Iterators.java:939)
	at com.google.common.collect.Iterators.addAll(Iterators.java:357)
	at com.google.common.collect.Lists.newArrayList(Lists.java:147)
	at oy.a(SourceFile:179)
	at oy.c(SourceFile:163)
	at oy.a(SourceFile:116)
	at att.d(SourceFile:88)
	at att.a(SourceFile:77)
	at ahf.a(SourceFile:79)
	at agh.a(SourceFile:122)
	at od.a(SourceFile:307)
	at on.a(SourceFile:411)
	at kt.a(SourceFile:59)
	at kt.a(SourceFile:10)
	at fn.a(SourceFile:163)
	at oi.c(SourceFile:134)
	at net.minecraft.server.MinecraftServer.w(SourceFile:565)
	at net.minecraft.server.MinecraftServer.v(SourceFile:481)
	at cek.v(SourceFile:128)
	at net.minecraft.server.MinecraftServer.run(SourceFile:397)
	at mq.run(SourceFile:667)


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

-- Head --
Stacktrace:
	at java.util.LinkedList$ListItr.checkForComodification(Unknown Source)
	at java.util.LinkedList$ListItr.next(Unknown Source)
	at com.google.common.collect.Iterators$9.next(Iterators.java:939)
	at com.google.common.collect.Iterators.addAll(Iterators.java:357)
	at com.google.common.collect.Lists.newArrayList(Lists.java:147)
	at oy.a(SourceFile:179)
	at oy.c(SourceFile:163)
	at oy.a(SourceFile:116)
	at att.d(SourceFile:88)
	at att.a(SourceFile:77)
	at ahf.a(SourceFile:79)
	at agh.a(SourceFile:122)
	at od.a(SourceFile:307)
	at on.a(SourceFile:411)
	at kt.a(SourceFile:59)
	at kt.a(SourceFile:10)

-- Packet information --
Details:
	Packet name: kt
	Packet debug: 
Stacktrace:
	at fn.a(SourceFile:163)

-- Ticking connection --
Details:
	Connection: fn@34f3a633
Stacktrace:
	at oi.c(SourceFile:134)
	at net.minecraft.server.MinecraftServer.w(SourceFile:565)
	at net.minecraft.server.MinecraftServer.v(SourceFile:481)
	at cek.v(SourceFile:128)
	at net.minecraft.server.MinecraftServer.run(SourceFile:397)
	at mq.run(SourceFile:667)

-- System Details --
Details:
	Minecraft Version: 14w11b
	Operating System: Windows 7 (amd64) version 6.1
	Java Version: 1.7.0_51, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 671320184 bytes (640 MB) / 1027604480 bytes (980 MB) up to 1027604480 bytes (980 MB)
	JVM Flags: 3 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -Xms1G
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	Profiler Position: N/A (disabled)
	Player Count: 1 / 8; [oc['Kumasasa'/0, l='Flatworld', x=-12,75, y=64,00, z=22,09]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.