---- Minecraft Crash Report ----
// I just don't know what went wrong :(

Time: 9/5/15 12:22 PM
Description: Exception in server tick loop

java.lang.ArrayIndexOutOfBoundsException: -8
at net.minecraft.world.chunk.Chunk.func_150810_a(Chunk.java:511)
at buildcraft.robotics.map.MapChunk.update(MapChunk.java:43)
at buildcraft.robotics.map.MapWorld.updateChunk(MapWorld.java:139)
at buildcraft.robotics.map.MapWorld.tick(MapWorld.java:129)
at buildcraft.robotics.map.MapManager.tickDelayedWorlds(MapManager.java:78)
at cpw.mods.fml.common.eventhandler.ASMEventHandler_638_MapManager_tickDelayedWorlds_WorldTickEvent.invoke(.dynamic)
at cpw.mods.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:54)
at cpw.mods.fml.common.eventhandler.EventBus.post(EventBus.java:138)
at cpw.mods.fml.common.FMLCommonHandler.onPostWorldTick(FMLCommonHandler.java:255)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:645)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:547)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:186)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:427)
at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685)