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Time: 8/10/16 10:50 AM
Description: Exception ticking world

java.util.ConcurrentModificationException
	at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:901)
	at java.util.ArrayList$Itr.next(ArrayList.java:851)
	at net.minecraft.world.WorldServer.doChunkGC(WorldServer.java:513)
	at net.minecraft.world.WorldServer.handler$onTickEnd$0(WorldServer.java:494)
	at net.minecraft.world.WorldServer.func_72835_b(WorldServer.java:235)
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:690)
	at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:344)
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:605)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:481)
	at java.lang.Thread.run(Thread.java:745)