Server dies randomly with this error

[Jamie1130]

Title: Server dies randomly with this error

Version: 3.1.2

OS: Windows Server 2008

Java Version: Java SE Runtime Environment (build 1.7.0_07-b11)

Description of Problem:

Basically. Somebody joins or loads a chunk and then out of no where the server dies and this is the last error to be there. Server doesn't crash either just hangs and stops working.

Plugins:

antiSpam

Buycraft

ChatManager

ChestShop

Essentials

GreifPrevention

honeychest

LogBlock

McBans

MCMA_Compat

mcMMO

NoItem

PerformanceMonitor

PEX

Voteifyer

WorldEdit

Error Messages:

Error Log:

2012-09-22 21:09:53 [iNFO] Sending serverside check to: andreblue

2012-09-22 21:10:24 [sEVERE] java.lang.NullPointerException

2012-09-22 21:10:24 [sEVERE] 	at net.minecraft.server.ItemInWorldManager.breakBlock(ItemInWorldManager.java:249)

2012-09-22 21:10:24 [sEVERE] 	at net.minecraft.server.ItemInWorldManager.c(ItemInWorldManager.java:87)

2012-09-22 21:10:24 [sEVERE] 	at net.minecraft.server.EntityPlayer.F_(EntityPlayer.java:144)

2012-09-22 21:10:24 [sEVERE] 	at net.minecraft.server.World.entityJoinedWorld(World.java:1286)

2012-09-22 21:10:24 [sEVERE] 	at net.minecraft.server.WorldServer.entityJoinedWorld(WorldServer.java:111)

2012-09-22 21:10:24 [sEVERE] 	at net.minecraft.server.World.playerJoinedWorld(World.java:1268)

2012-09-22 21:10:24 [sEVERE] 	at net.minecraft.server.World.tickEntities(World.java:1164)

2012-09-22 21:10:24 [sEVERE] 	at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:569)

2012-09-22 21:10:24 [sEVERE] 	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:467)

2012-09-22 21:10:24 [sEVERE] 	at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)

2012-09-22 21:10:24 [sEVERE] Unexpected exception

java.lang.NullPointerException

	at net.minecraft.server.ItemInWorldManager.breakBlock(ItemInWorldManager.java:249)

	at net.minecraft.server.ItemInWorldManager.c(ItemInWorldManager.java:87)

	at net.minecraft.server.EntityPlayer.F_(EntityPlayer.java:144)

	at net.minecraft.server.World.entityJoinedWorld(World.java:1286)

	at net.minecraft.server.WorldServer.entityJoinedWorld(WorldServer.java:111)

	at net.minecraft.server.World.playerJoinedWorld(World.java:1268)

	at net.minecraft.server.World.tickEntities(World.java:1164)

	at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:569)

	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:467)

	at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)

2012-09-22 21:11:15 [iNFO] Connection reset

2012-09-22 21:11:33 [iNFO] Connection reset

2012-09-22 21:11:43 [iNFO] Read timed out

2012-09-22 21:13:43 [iNFO] Connection reset

[M4jorpain]

I got about the same problem :(