Here is the crash report from the server.
[INFO] Starting minecraft server version 1.4.7
[WARNING] To start the server with more ram, launch it as "java -Xmx1024M -Xms1024M -jar minecraft_server.jar"
[INFO] Loading properties
[INFO] Default game type: SURVIVAL
[INFO] Generating keypair
[INFO] Starting Minecraft server on *:25565
[INFO] Preparing level "world"
[SEVERE] Encountered an unexpected exception t
t: Loading NBT data
at cd.b(SourceFile:102)
at bq.a(SourceFile:34)
at cd.b(SourceFile:96)
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.readInt(Unknown Source)
at by.a(SourceFile:33)
at cd.b(SourceFile:96)
... 13 more
[SEVERE] This crash report has been saved to: D:\Download\MindCrack_Server\.\crash-reports\crash-2013-05-21_15.55.40-server.txt
[INFO] Starting minecraft server version 1.4.7
[WARNING] To start the server with more ram, launch it as "java -Xmx1024M -Xms1024M -jar minecraft_server.jar"
[INFO] Loading properties
[INFO] Default game type: SURVIVAL
[INFO] Generating keypair
[INFO] Starting Minecraft server on *:25565
[INFO] Preparing level "world"
[SEVERE] Encountered an unexpected exception t
t: Loading NBT data
at cd.b(SourceFile:102)
at bq.a(SourceFile:34)
at cd.b(SourceFile:96)
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.readInt(Unknown Source)
at by.a(SourceFile:33)
at cd.b(SourceFile:96)
... 13 more
[SEVERE] This crash report has been saved to: D:\Download\MindCrack_Server\.\crash-reports\crash-2013-05-21_15.55.40-server.txt