---- Minecraft Crash Report ----
// Don't be sad. I'll do better next time, I promise!

Time: 02.08.14 06:53
Description: Exception in server tick loop

java.util.ConcurrentModificationException
	at java.util.HashMap$HashIterator.nextEntry(HashMap.java:894)
	at java.util.HashMap$KeyIterator.next(HashMap.java:928)
	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:724)


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: 14w31a
	Operating System: FreeBSD (amd64) version 9.2-RELEASE-p7
	Java Version: 1.7.0_25, Oracle Corporation
	Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 283816392 bytes (270 MB) / 1066336256 bytes (1016 MB) up to 1066336256 bytes (1016 MB)
	JVM Flags: 2 total; -Xmx1024M -Xms1024M
	IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
	Profiler Position: N/A (disabled)
	Player Count: 1 / 20; [qr['kskogsrud'/547744390, l='world', x=-190,70, y=83,00, z=-394,71]]
	Is Modded: Unknown (can't tell)
	Type: Dedicated Server (map_server.txt)