---- Minecraft Crash Report ----
// Hey, that tickles! Hehehe!

Time: 27/09/14 3:28 AM
Description: Exception in server tick loop

java.util.ConcurrentModificationException
	at java.util.HashMap$HashIterator.nextEntry(Unknown Source)
	at java.util.HashMap$KeyIterator.next(Unknown Source)
	at qn.a(SourceFile:166)
	at net.minecraft.server.MinecraftServer.z(SourceFile:615)
	at po.z(SourceFile:305)
	at net.minecraft.server.MinecraftServer.y(SourceFile:531)
	at net.minecraft.server.MinecraftServer.run(SourceFile:447)
	at java.lang.Thread.run(Unknown Source)


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: 1.8
	Operating System: Windows 7 (amd64) version 6.1
	Java Version: 1.7.0_45, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 1429966784 bytes (1363 MB) / 1594359808 bytes (1520 MB) up to 3803185152 bytes (3627 MB)
	JVM Flags: 0 total; 
	IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
	Profiler Position: N/A (disabled)
	Player Count: 1 / 20; [qw['TerrorBite'/355, l='world', x=-3.75, y=73.00, z=49.70]]
	Is Modded: Unknown (can't tell)
	Type: Dedicated Server (map_server.txt)