[04:06:56] [Lag Spike Detector/ERROR] [TickProfiler]: The server appears to have lag spiked.
Last tick 0.23401448s ago."Server thread" RUNNABLE
        at java.io.FileOutputStream.write(Native Method)
        at java.io.FileOutputStream.write(Unknown Source)
        at java.io.DataOutputStream.writeInt(Unknown Source)
        at net.minecraft.nbt.NBTTagIntArray.func_74734_a(NBTTagIntArray.java:26)
        at net.minecraft.nbt.NBTTagCompound.func_150298_a(NBTTagCompound.java:376)
        at net.minecraft.nbt.NBTTagCompound.func_74734_a(NBTTagCompound.java:31)
        at net.minecraft.nbt.NBTTagList.func_74734_a(NBTTagList.java:32)
        at net.minecraft.nbt.NBTTagCompound.func_150298_a(NBTTagCompound.java:376)
        at net.minecraft.nbt.NBTTagCompound.func_74734_a(NBTTagCompound.java:31)
        at net.minecraft.nbt.NBTTagCompound.func_150298_a(NBTTagCompound.java:376)
        at net.minecraft.nbt.NBTTagCompound.func_74734_a(NBTTagCompound.java:31)
        at net.minecraft.nbt.NBTTagCompound.func_150298_a(NBTTagCompound.java:376)
        at net.minecraft.nbt.NBTTagCompound.func_74734_a(NBTTagCompound.java:31)
        at net.minecraft.nbt.CompressedStreamTools.func_150663_a(CompressedStreamTools.java:149)
        at net.minecraft.nbt.CompressedStreamTools.func_74800_a(CompressedStreamTools.java:139)
        at net.minecraft.nbt.CompressedStreamTools.func_74795_b(CompressedStreamTools.java:190)
        at ftb.lib.LMNBTUtils.writeMap(LMNBTUtils.java:52)
        at ftb.utils.mod.handlers.FTBUWorldEventHandler.worldSaved(FTBUWorldEventHandler.java:45)
        at cpw.mods.fml.common.eventhandler.ASMEventHandler_389_FTBUWorldEventHandler_worldSaved_Save.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 net.minecraft.world.WorldServer.func_73044_a(WorldServer.java:810)
        at net.minecraft.server.MinecraftServer.func_71267_a(MinecraftServer.java:318)
        at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:569)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:427)
        at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685)