Help with console error

Time: 8/8/13 2:13 PM
Description: Loading NBT data

java.io.UTFDataFormatException: malformed input around byte 20
at java.io.DataInputStream.readUTF(Unknown Source)
at java.io.DataInputStream.readUTF(Unknown Source)
at net.minecraft.server.v1_6_R2.NBTBase.b(SourceFile:96)
at net.minecraft.server.v1_6_R2.NBTTagCompound.load(SourceFile:38)
at net.minecraft.server.v1_6_R2.NBTTagList.load(SourceFile:41)
at net.minecraft.server.v1_6_R2.NBTBase.b(SourceFile:101)
at net.minecraft.server.v1_6_R2.NBTTagCompound.load(SourceFile:38)
at net.minecraft.server.v1_6_R2.NBTBase.b(SourceFile:101)
at net.minecraft.server.v1_6_R2.NBTTagCompound.load(SourceFile:38)
at net.minecraft.server.v1_6_R2.NBTBase.b(SourceFile:101)
at net.minecraft.server.v1_6_R2.NBTBase.a(SourceFile:89)
at net.minecraft.server.v1_6_R2.NBTCompressedStreamTools.a(SourceFile:75)
at net.minecraft.server.v1_6_R2.ChunkRegionLoader.loadChunk(ChunkRegionLoader.java:80)
at org.bukkit.craftbukkit.v1_6_R2.chunkio.ChunkIOProvider.callStage1(ChunkIOProvider.java:19)
at org.bukkit.craftbukkit.v1_6_R2.chunkio.ChunkIOProvider.callStage1(ChunkIOProvider.java:13)
at org.bukkit.craftbukkit.v1_6_R2.util.AsynchronousExecutor$Task.init(AsynchronousExecutor.java:150)
at org.bukkit.craftbukkit.v1_6_R2.util.AsynchronousExecutor$Task.initAsync(AsynchronousExecutor.java:95)
at org.bukkit.craftbukkit.v1_6_R2.util.AsynchronousExecutor$Task.run(AsynchronousExecutor.java:85)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Stacktrace:
at java.io.DataInputStream.readUTF(Unknown Source)
at java.io.DataInputStream.readUTF(Unknown Source)
at net.minecraft.server.v1_6_R2.NBTBase.b(SourceFile:96)
at net.minecraft.server.v1_6_R2.NBTTagCompound.load(SourceFile:38)
at net.minecraft.server.v1_6_R2.NBTTagList.load(SourceFile:41)

-- NBT Tag --
Details:
Tag name: Sections
Tag type: 9
Stacktrace:
at net.minecraft.server.v1_6_R2.NBTBase.b(SourceFile:101)
at net.minecraft.server.v1_6_R2.NBTTagCompound.load(SourceFile:38)
at net.minecraft.server.v1_6_R2.NBTBase.b(SourceFile:101)
at net.minecraft.server.v1_6_R2.NBTTagCompound.load(SourceFile:38)
at net.minecraft.server.v1_6_R2.NBTBase.b(SourceFile:101)
at net.minecraft.server.v1_6_R2.NBTBase.a(SourceFile:89)
at net.minecraft.server.v1_6_R2.NBTCompressedStreamTools.a(SourceFile:75)
at net.minecraft.server.v1_6_R2.ChunkRegionLoader.loadChunk(ChunkRegionLoader.java:80)
at org.bukkit.craftbukkit.v1_6_R2.chunkio.ChunkIOProvider.callStage1(ChunkIOProvider.java:19)
at org.bukkit.craftbukkit.v1_6_R2.chunkio.ChunkIOProvider.callStage1(ChunkIOProvider.java:13)
at org.bukkit.craftbukkit.v1_6_R2.util.AsynchronousExecutor$Task.init(AsynchronousExecutor.java:150)
at org.bukkit.craftbukkit.v1_6_R2.util.AsynchronousExecutor$Task.initAsync(AsynchronousExecutor.java:95)
at org.bukkit.craftbukkit.v1_6_R2.util.AsynchronousExecutor$Task.run(AsynchronousExecutor.java:85)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)