server

[INFO] Starting minecraft server version 1.4.7
[INFO] Loading properties
[INFO] Default game type: SURVIVAL
[INFO] Generating keypair
[INFO] Starting Minecraft server on 25.120.61.138:25565
[INFO] Preparing level "world"
[SEVERE] Encountered an unexpected exception NullPointerException
java.lang.NullPointerException
	at codechicken.wirelessredstone.core.RedstoneEtherServer.setDimensionTransmitterCount(RedstoneEtherServer.java:636)
	at codechicken.wirelessredstone.core.SaveManager.loadDimensionHash(SaveManager.java:672)
	at codechicken.wirelessredstone.core.RedstoneEtherServer.<init>(RedstoneEtherServer.java:34)
	at codechicken.wirelessredstone.core.RedstoneEther.loadServerWorld(RedstoneEther.java:120)
	at codechicken.wirelessredstone.core.WRCoreEventHandler.onWorldLoad(WRCoreEventHandler.java:30)
	at net.minecraftforge.event.ASMEventHandler_72_WRCoreEventHandler_onWorldLoad_Load.invoke(.dynamic)
	at net.minecraftforge.event.ASMEventHandler.invoke(ASMEventHandler.java:35)
	at net.minecraftforge.event.EventBus.post(EventBus.java:103)
	at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:279)
	at ho.c(DedicatedServer.java:180)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:458)
	at fy.run(SourceFile:849)
[SEVERE] This crash report has been saved to: C:\Users\Simon\Desktop\Sever\.\crash-reports\crash-2013-04-14_15.23.18-server.txt