Errors - Constantly Crashing Server - Need Help ASAP!

Getting errors left and right. Bukkit #2561 1.4.6-R0.1 (Beta Build)

Not entirely sure how to handle it.. Was working fine before the new patch. Any ideas what would cause the errors bellow?

We run a custom Server plugin created by myself. As well as a few other minor ones like core protect and world border. None of which seem to be having any issues.

Thanks for any help.

Crash Logs 1:

Code:

Time: 12/28/12 9:47 PM
Description: Exception in server tick loop
 
java.util.ConcurrentModificationException
    at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:819)
    at java.util.ArrayList$Itr.next(ArrayList.java:791)
    at net.minecraft.server.v1_4_6.EntityTrackerEntry.track(EntityTrackerEntry.java:85)
    at net.minecraft.server.v1_4_6.EntityTracker.updatePlayers(EntityTracker.java:138)
    at net.minecraft.server.v1_4_6.MinecraftServer.r(MinecraftServer.java:589)
    at net.minecraft.server.v1_4_6.DedicatedServer.r(DedicatedServer.java:224)
    at net.minecraft.server.v1_4_6.MinecraftServer.q(MinecraftServer.java:494)
    at net.minecraft.server.v1_4_6.MinecraftServer.run(MinecraftServer.java:427)
    at net.minecraft.server.v1_4_6.ThreadServerApplication.run(SourceFile:849)

Crash Logs 2:

Code:

Time: 12/29/12 5:29 PM
Description: Exception in server tick loop
 
java.lang.ArrayIndexOutOfBoundsException: -137
    at net.minecraft.server.v1_4_6.ChunkSection.a(ChunkSection.java:41)
    at net.minecraft.server.v1_4_6.Chunk.getTypeId(Chunk.java:350)
    at net.minecraft.server.v1_4_6.Chunk.a(Chunk.java:640)
    at net.minecraft.server.v1_4_6.Chunk.a(Chunk.java:627)
    at net.minecraft.server.v1_4_6.ChunkRegionLoader.loadEntities(ChunkRegionLoader.java:350)
    at org.bukkit.craftbukkit.v1_4_6.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:47)
    at org.bukkit.craftbukkit.v1_4_6.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:13)
    at org.bukkit.craftbukkit.v1_4_6.util.AsynchronousExecutor$Task.finish(AsynchronousExecutor.java:179)
    at org.bukkit.craftbukkit.v1_4_6.util.AsynchronousExecutor.finishActive(AsynchronousExecutor.java:287)
    at org.bukkit.craftbukkit.v1_4_6.chunkio.ChunkIOExecutor.tick(ChunkIOExecutor.java:30)
    at net.minecraft.server.v1_4_6.MinecraftServer.r(MinecraftServer.java:537)
    at net.minecraft.server.v1_4_6.DedicatedServer.r(DedicatedServer.java:224)
    at net.minecraft.server.v1_4_6.MinecraftServer.q(MinecraftServer.java:494)
    at net.minecraft.server.v1_4_6.MinecraftServer.run(MinecraftServer.java:427)
    at net.minecraft.server.v1_4_6.ThreadServerApplication.run(SourceFile:849)
 
Time: 12/29/12 10:10 PM
Description: Exception in server tick loop
 
java.lang.ArrayIndexOutOfBoundsException: -137
    at net.minecraft.server.v1_4_6.ChunkSection.a(ChunkSection.java:41)
    at net.minecraft.server.v1_4_6.Chunk.getTypeId(Chunk.java:350)
    at net.minecraft.server.v1_4_6.Chunk.a(Chunk.java:640)
    at net.minecraft.server.v1_4_6.Chunk.a(Chunk.java:627)
    at net.minecraft.server.v1_4_6.ChunkRegionLoader.loadEntities(ChunkRegionLoader.java:350)
    at org.bukkit.craftbukkit.v1_4_6.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:47)
    at org.bukkit.craftbukkit.v1_4_6.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:13)
    at org.bukkit.craftbukkit.v1_4_6.util.AsynchronousExecutor$Task.finish(AsynchronousExecutor.java:179)
    at org.bukkit.craftbukkit.v1_4_6.util.AsynchronousExecutor.finishActive(AsynchronousExecutor.java:287)
    at org.bukkit.craftbukkit.v1_4_6.chunkio.ChunkIOExecutor.tick(ChunkIOExecutor.java:30)
    at net.minecraft.server.v1_4_6.MinecraftServer.r(MinecraftServer.java:537)
    at net.minecraft.server.v1_4_6.DedicatedServer.r(DedicatedServer.java:224)
    at net.minecraft.server.v1_4_6.MinecraftServer.q(MinecraftServer.java:494)
    at net.minecraft.server.v1_4_6.MinecraftServer.run(MinecraftServer.java:427)
    at net.minecraft.server.v1_4_6.ThreadServerApplication.run(SourceFile:849)
 
Time: 12/29/12 10:38 PM
Description: Exception in server tick loop
 
java.lang.ArrayIndexOutOfBoundsException: -137
    at net.minecraft.server.v1_4_6.ChunkSection.a(ChunkSection.java:41)
    at net.minecraft.server.v1_4_6.Chunk.getTypeId(Chunk.java:350)
    at net.minecraft.server.v1_4_6.Chunk.a(Chunk.java:640)
    at net.minecraft.server.v1_4_6.Chunk.a(Chunk.java:627)
    at net.minecraft.server.v1_4_6.ChunkRegionLoader.loadEntities(ChunkRegionLoader.java:350)
    at org.bukkit.craftbukkit.v1_4_6.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:47)
    at org.bukkit.craftbukkit.v1_4_6.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:13)
    at org.bukkit.craftbukkit.v1_4_6.util.AsynchronousExecutor$Task.finish(AsynchronousExecutor.java:179)
    at org.bukkit.craftbukkit.v1_4_6.util.AsynchronousExecutor.finishActive(AsynchronousExecutor.java:287)
    at org.bukkit.craftbukkit.v1_4_6.chunkio.ChunkIOExecutor.tick(ChunkIOExecutor.java:30)
    at net.minecraft.server.v1_4_6.MinecraftServer.r(MinecraftServer.java:537)
    at net.minecraft.server.v1_4_6.DedicatedServer.r(DedicatedServer.java:224)
    at net.minecraft.server.v1_4_6.MinecraftServer.q(MinecraftServer.java:494)
    at net.minecraft.server.v1_4_6.MinecraftServer.run(MinecraftServer.java:427)
    at net.minecraft.server.v1_4_6.ThreadServerApplication.run(SourceFile:849)

 

I get this too.

 

Anyone have any suggestions? Or want any father information?

Killertudse, what mods are you running on your server?

We are using: WorldBorder, Vault, PermissionsEx, TechieFilter, iConomy, SimpleClans, CoreProtect, PlotManager, ChatManager, and Serenity (our custom mod). Do you have any of those? Maybe we can figure out something in common. (I'm with oonej btw)

Could it possibly be related to:
https://bukkit.atlassian.net/browse/BUKKIT-1331

 

I have the same crash over and over

 

glad to see its not just me...

 

Linkupdated. What mods are you using on your system?

 

Welcome to the Bukkit forums. It looks like you have a corrupt chunk on your server. Try restoring your map from a backup, or using a map repair utility.

 

It was just that. Some corrupt chunks. I personally downloaded the map. Loaded it into MCEdit. I deleted the bad chunks to be regenerated when someone walk near it. Then I uploaded the map onto the server. It seemed to fix all errors and help reduce lag. So far been fine for about 1 hour.

 

This. Verify the integrity of the map, and it should fix everything for you.

 

This started happening to me to, my friend was building with stairs and they bugged out by turning in weird ways and stuff, so im going to reset the world and see the results.