[00:08:49] [Server thread/ERROR] [FML]: Exception caught during firing event net.minecraftforge.fml.common.gameevent.TickEvent$WorldTickEvent@4ab1432:
java.util.ConcurrentModificationException
	at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:901) ~[?:1.8.0_45]
	at java.util.ArrayList$Itr.next(ArrayList.java:851) ~[?:1.8.0_45]
	at com.uberverse.arkcraft.common.event.CommonEventHandler.onWorldTick(CommonEventHandler.java:130) ~[CommonEventHandler.class:?]
	at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_11_CommonEventHandler_onWorldTick_WorldTickEvent.invoke(.dynamic) ~[?:?]
	at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:55) ~[ASMEventHandler.class:?]
	at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:140) [EventBus.class:?]
	at net.minecraftforge.fml.common.FMLCommonHandler.onPreWorldTick(FMLCommonHandler.java:309) [FMLCommonHandler.class:?]
	at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:759) [MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:669) [MinecraftServer.class:?]
	at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:171) [IntegratedServer.class:?]
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:540) [MinecraftServer.class:?]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_45]
[00:08:49] [Server thread/ERROR] [FML]: Index: 1 Listeners:
[00:08:49] [Server thread/ERROR] [FML]: 0: NORMAL
[00:08:49] [Server thread/ERROR] [FML]: 1: ASM: com.uberverse.arkcraft.common.event.CommonEventHandler@430ec0d7 onWorldTick(Lnet/minecraftforge/fml/common/gameevent/TickEvent$WorldTickEvent;)V
[00:08:49] [Server thread/ERROR]: Encountered an unexpected exception
java.util.ConcurrentModificationException
	at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:901) ~[?:1.8.0_45]
	at java.util.ArrayList$Itr.next(ArrayList.java:851) ~[?:1.8.0_45]
	at com.uberverse.arkcraft.common.event.CommonEventHandler.onWorldTick(CommonEventHandler.java:130) ~[CommonEventHandler.class:?]
	at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_11_CommonEventHandler_onWorldTick_WorldTickEvent.invoke(.dynamic) ~[?:?]
	at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:55) ~[ASMEventHandler.class:?]
	at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:140) ~[EventBus.class:?]
	at net.minecraftforge.fml.common.FMLCommonHandler.onPreWorldTick(FMLCommonHandler.java:309) ~[FMLCommonHandler.class:?]
	at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:759) ~[MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:669) ~[MinecraftServer.class:?]
	at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:171) ~[IntegratedServer.class:?]
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:540) [MinecraftServer.class:?]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_45]
[00:08:49] [Server thread/ERROR]: This crash report has been saved to: C:\Users\Andy\Desktop\ARKCraft\run\.\crash-reports\crash-2016-08-23_00.08.49-server.txt
[00:08:49] [Server thread/INFO]: Stopping server
[00:08:49] [Server thread/INFO]: Saving players
[00:08:49] [Client thread/INFO] [STDOUT]: [net.minecraft.init.Bootstrap:printToSYSOUT:663]: ---- Minecraft Crash Report ----
// This doesn't make any sense!

Time: 8/23/16 12:08 AM
Description: Exception in server tick loop

java.util.ConcurrentModificationException
	at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:901)
	at java.util.ArrayList$Itr.next(ArrayList.java:851)
	at com.uberverse.arkcraft.common.event.CommonEventHandler.onWorldTick(CommonEventHandler.java:130)
	at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_11_CommonEventHandler_onWorldTick_WorldTickEvent.invoke(.dynamic)
	at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:55)
	at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:140)
	at net.minecraftforge.fml.common.FMLCommonHandler.onPreWorldTick(FMLCommonHandler.java:309)
	at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:759)
	at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:669)
	at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:171)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:540)
	at java.lang.Thread.run(Thread.java:745)