Strange Error

[doctormayhem]

So i get this strange error, and it doesn't completely crash the server to restart, it more of like holds the server. It keeps the console running, but nobody can join.

2012-10-14 17:39:53 [sEVERE] java.util.ConcurrentModificationException

2012-10-14 17:39:53 [sEVERE] at java.util.ArrayList$Itr.checkForComodificatio

n(Unknown Source)

2012-10-14 17:39:53 [sEVERE] at java.util.ArrayList$Itr.next(Unknown Source)

2012-10-14 17:39:53 [sEVERE] at net.minecraft.server.World.getTileEntity(Worl

d.java:1644)

2012-10-14 17:39:53 [sEVERE] at net.minecraft.server.WorldServer.getTileEntit

y(WorldServer.java:45)

2012-10-14 17:39:53 [sEVERE] at ee.TileCollector3.sendEnergy(TileCollector3.j

ava:478)

2012-10-14 17:39:53 [sEVERE] at ee.TileCollector3.sendAllPackets(TileCollecto

r3.java:494)

2012-10-14 17:39:53 [sEVERE] at ee.TileCollector3.q_(TileCollector3.java:631)

2012-10-14 17:39:53 [sEVERE] at net.minecraft.server.World.tickEntities(World

.java:1190)

2012-10-14 17:39:53 [sEVERE] at net.minecraft.server.MinecraftServer.w(Minecr

aftServer.java:569)

2012-10-14 17:39:53 [sEVERE] at net.minecraft.server.MinecraftServer.run(Mine

craftServer.java:467)

2012-10-14 17:39:53 [sEVERE] at net.minecraft.server.ThreadServerApplication.

run(SourceFile:492)

2012-10-14 17:39:53 [sEVERE] Unexpected exception

java.util.ConcurrentModificationException

at java.util.ArrayList$Itr.checkForComodification(Unknown Source)

at java.util.ArrayList$Itr.next(Unknown Source)

at net.minecraft.server.World.getTileEntity(World.java:1644)

at net.minecraft.server.WorldServer.getTileEntity(WorldServer.java:45)

at ee.TileCollector3.sendEnergy(TileCollector3.java:478)

at ee.TileCollector3.sendAllPackets(TileCollector3.java:494)

at ee.TileCollector3.q_(TileCollector3.java:631)

at net.minecraft.server.World.tickEntities(World.java:1190)

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)

2012-10-14 17:41:45 [iNFO] Connection reset

2012-10-14 17:42:49 [iNFO] Connection reset

[Jorcer]

Then post a bug report.