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

Time: 8/3/14 4:24 PM
Description: Exception in server tick loop

java.util.ConcurrentModificationException
	at java.util.HashMap$HashIterator.nextEntry(HashMap.java:810)
	at java.util.HashMap$KeyIterator.next(HashMap.java:845)
	at qi.a(SourceFile:163)
	at net.minecraft.server.MinecraftServer.y(SourceFile:614)
	at pk.y(SourceFile:303)
	at net.minecraft.server.MinecraftServer.x(SourceFile:530)
	at net.minecraft.server.MinecraftServer.run(SourceFile:446)
	at java.lang.Thread.run(Thread.java:701)


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

-- System Details --
Details:
	Minecraft Version: 14w31a
	Operating System: Linux (amd64) version 2.6.32-042stab092.2
	Java Version: 1.6.0_31, Sun Microsystems Inc.
	Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Sun Microsystems Inc.
	Memory: 3688741840 bytes (3517 MB) / 4116054016 bytes (3925 MB) up to 4116054016 bytes (3925 MB)
	JVM Flags: 2 total; -Xms4G -Xmx4G
	IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
	Profiler Position: N/A (disabled)
	Player Count: 1 / 20; [qr['Dominator'/244, l='world', x=-296.76, y=68.00, z=177.34]]
	Is Modded: Unknown (can't tell)
	Type: Dedicated Server (map_server.txt)