Error

[INFO] Starting minecraft server version 1.4.7
[INFO] Loading properties
[INFO] Default game type: SURVIVAL
[INFO] Generating keypair
[INFO] Starting Minecraft server on 25.1.52.184:25565
[INFO] Preparing level "world"
[SEVERE] Encountered an unexpected exception t
t: Loading NBT data
    at cd.b(SourceFile:102)
    at ca.a(CompressedStreamTools.java:126)
    at ca.a(CompressedStreamTools.java:170)
    at net.minecraftforge.common.ForgeChunkManager.loadWorld(ForgeChunkManager.java:416)
    at net.minecraftforge.common.ForgeInternalHandler.onDimensionLoad(ForgeInternalHandler.java:71)
    at net.minecraftforge.event.ASMEventHandler_1_ForgeInternalHandler_onDimensionLoad_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)
Caused by: java.io.EOFException
    at java.io.DataInputStream.readUnsignedShort(Unknown Source)
    at java.io.DataInputStream.readUTF(Unknown Source)
    at java.io.DataInputStream.readUTF(Unknown Source)
    at cd.b(SourceFile:91)
    at bq.a(SourceFile:34)
    at cd.b(SourceFile:96)
    ... 11 more
[SEVERE] This crash report has been saved to: C:\Users\Matt\Desktop\RPG Modpack\.\crash-reports\crash-2013-03-15_13.41.23-server.txt