Packet/Chunk Error

1. Linux
2. x64
3. #32-Ubuntu SMP Fri August 09:39:35 UTC 2010 i686 GNU/Linux
java version "1.6.0_22"
Java(TM) SE Runtime Environment (build 1.6.0_22-b04)
Java HotSpot(TM) Client VM (build 17.1-b03, mixed mode, sharing)
4. No
5. 1060
6. ./launch.sh
7.Multiverse,essentials,warpz0r,citizens,worldguard,worldedit,voxelsniper,supplychest,iconomy,iconomchestshop,regionmarket,permissions, virtualshop, Heroes, Bigbrother

This is happening whenever anyone tries to log into the server and then it gives stream error. I've already tried removing .dat and that did not work. I've even tried backups of the map to see if its because of a corrupt chunk but that didn't work either. Please help

Code:

16:20:28 [INFO] insanehero [/154.5.45.101:10631] logged in with entity id 1006 at ([smp] -1428.875, 90.0, -1210.1875)
16:20:28 [SEVERE] java.lang.NullPointerException
16:20:28 [SEVERE]       at java.lang.System.arraycopy(Native Method)
16:20:28 [SEVERE]       at java.io.BufferedOutputStream.write(BufferedOutputStream.java:111)
16:20:28 [SEVERE]       at java.io.DataOutputStream.write(DataOutputStream.java:90)
16:20:28 [SEVERE]       at net.minecraft.server.Packet51MapChunk.a(Packet51MapChunk.java:88)
16:20:28 [SEVERE]       at net.minecraft.server.Packet.a(Packet.java:116)
16:20:28 [SEVERE]       at net.minecraft.server.NetworkManager.f(NetworkManager.java:107)
16:20:28 [SEVERE]       at net.minecraft.server.NetworkManager.d(NetworkManager.java:263)
16:20:28 [SEVERE]       at net.minecraft.server.NetworkWriterThread.run(SourceFile:107)

 

Did your server used to run Spout or did you ever install Spout onto your client.