---- Minecraft Crash Report ----
// Oops.

Time: 12/29/13 3:33 AM
Description: Exception in server tick loop

java.util.ConcurrentModificationException
	at java.util.HashMap$HashIterator.nextEntry(HashMap.java:926)
	at java.util.HashMap$EntryIterator.next(HashMap.java:966)
	at java.util.HashMap$EntryIterator.next(HashMap.java:964)
	at com.advGenetics.TickHandler.TickHandlerClientServerSync.tickStart(TickHandlerClientServerSync.java:33)
	at za.co.mcportcentral.SkipIntervalHandler.tickStart(SkipIntervalHandler.java:32)
	at cpw.mods.fml.common.FMLCommonHandler.tickStart(FMLCommonHandler.java:122)
	at cpw.mods.fml.common.FMLCommonHandler.onPreWorldTick(FMLCommonHandler.java:295)
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:883)
	at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:330)
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:793)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:675)
	at net.minecraft.server.ThreadMinecraftServer.run(ThreadMinecraftServer.java:16)