Time: 2/4/16 2:33 AM
Description: Exception in server tick loop

java.util.ConcurrentModificationException
	at java.util.HashMap$HashIterator.nextNode(HashMap.java:1429)
	at java.util.HashMap$KeyIterator.next(HashMap.java:1453)
	at net.minecraft.server.v1_8_R3.PacketPlayOutUpdateAttributes.<init>(SourceFile:25)
	at net.minecraft.server.v1_8_R3.EntityTrackerEntry.b(EntityTrackerEntry.java:290)
	at net.minecraft.server.v1_8_R3.EntityTrackerEntry.track(EntityTrackerEntry.java:203)
	at net.minecraft.server.v1_8_R3.EntityTracker.updatePlayers(EntityTracker.java:177)
	at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:861)
	at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:378)
	at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:713)
	at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:616)
	at java.lang.Thread.run(Thread.java:745)