2012-10-23 12:16:48 [SEVERE] java.util.ConcurrentModificationException
2012-10-23 12:16:48 [SEVERE] 	at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:819)
2012-10-23 12:16:48 [SEVERE] 	at java.util.ArrayList$Itr.next(ArrayList.java:791)
2012-10-23 12:16:48 [SEVERE] 	at net.minecraft.server.WorldServer.getTileEntities(WorldServer.java:546)
2012-10-23 12:16:48 [SEVERE] 	at net.minecraft.server.EntityPlayer.h_(EntityPlayer.java:165)
2012-10-23 12:16:48 [SEVERE] 	at net.minecraft.server.World.entityJoinedWorld(World.java:1245)
2012-10-23 12:16:48 [SEVERE] 	at net.minecraft.server.WorldServer.entityJoinedWorld(WorldServer.java:511)
2012-10-23 12:16:48 [SEVERE] 	at net.minecraft.server.World.playerJoinedWorld(World.java:1227)
2012-10-23 12:16:48 [SEVERE] 	at net.minecraft.server.World.tickEntities(World.java:1125)
2012-10-23 12:16:48 [SEVERE] 	at net.minecraft.server.WorldServer.tickEntities(WorldServer.java:428)
2012-10-23 12:16:48 [SEVERE] 	at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:547)
2012-10-23 12:16:48 [SEVERE] 	at net.minecraft.server.DedicatedServer.q(DedicatedServer.java:213)
2012-10-23 12:16:48 [SEVERE] 	at net.minecraft.server.MinecraftServer.p(MinecraftServer.java:474)
2012-10-23 12:16:48 [SEVERE] 	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:406)
2012-10-23 12:16:48 [SEVERE] 	at net.minecraft.server.ThreadServerApplication.run(SourceFile:539)
2012-10-23 12:16:48 [SEVERE] Encountered an unexpected exception ConcurrentModificationException
java.util.ConcurrentModificationException
	at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:819)
	at java.util.ArrayList$Itr.next(ArrayList.java:791)
	at net.minecraft.server.WorldServer.getTileEntities(WorldServer.java:546)
	at net.minecraft.server.EntityPlayer.h_(EntityPlayer.java:165)
	at net.minecraft.server.World.entityJoinedWorld(World.java:1245)
	at net.minecraft.server.WorldServer.entityJoinedWorld(WorldServer.java:511)
	at net.minecraft.server.World.playerJoinedWorld(World.java:1227)
	at net.minecraft.server.World.tickEntities(World.java:1125)
	at net.minecraft.server.WorldServer.tickEntities(WorldServer.java:428)
	at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:547)
	at net.minecraft.server.DedicatedServer.q(DedicatedServer.java:213)
	at net.minecraft.server.MinecraftServer.p(MinecraftServer.java:474)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:406)
	at net.minecraft.server.ThreadServerApplication.run(SourceFile:539)