Краш Gadomancy

[Ghosling]

java.util.ConcurrentModificationException
    at java.util.HashMap$HashIterator.nextNode(HashMap.java:1445)
    at java.util.HashMap$EntryIterator.next(HashMap.java:1479)
    at java.util.HashMap$EntryIterator.next(HashMap.java:1477)
    at makeo.gadomancy.common.events.EventHandlerWorld.on(EventHandlerWorld.java:91)
    at cpw.mods.fml.common.eventhandler.ASMEventHandler_403_EventHandlerWorld_on_WorldTickEvent.invoke(.dynamic)
    at cpw.mods.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:54)
    at cpw.mods.fml.common.eventhandler.EventBus.post(EventBus.java:140)
    at cpw.mods.fml.common.FMLCommonHandler.onPreWorldTick(FMLCommonHandler.java:273)
    at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:957)
    at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:432)
    at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:841)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:693)
    at java.lang.Thread.run(Thread.java:748)