Server spontaneously crashing

My server crashes about a minute after someone joins it, and I'm not sure if it is bukkit or not but I know you guys are smart and I've had good luck with bukkit's support before, so here is my error.

Code:

[*]2011-10-02 08:11:48 [INFO] tdog158 [/**.**.**.**:15037] logged in with entity id 200 at ([world] -621.71875, 64.0, -346.53125)
[*]2011-10-02 08:11:49 [SEVERE] java.lang.ArrayIndexOutOfBoundsException: 50
[*]2011-10-02 08:11:49 [SEVERE] at net.minecraft.server.Chunk.c(Chunk.java:556)
[*]2011-10-02 08:11:49 [SEVERE] at net.minecraft.server.World.isChunkLoaded(World.java:494)
[*]2011-10-02 08:11:49 [SEVERE] at net.minecraft.server.World.d(World.java:1905)
[*]2011-10-02 08:11:49 [SEVERE] at net.minecraft.server.World.b(World.java:1981)
[*]2011-10-02 08:11:49 [SEVERE] at net.minecraft.server.World.p(World.java:1898)
[*]2011-10-02 08:11:49 [SEVERE] at net.minecraft.server.World.i(World.java:1881)
[*]2011-10-02 08:11:49 [SEVERE] at net.minecraft.server.World.doTick(World.java:1638)
[*]2011-10-02 08:11:49 [SEVERE] at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:454)
[*]2011-10-02 08:11:49 [SEVERE] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:374)
[*]2011-10-02 08:11:49 [SEVERE] at net.minecraft.server.ThreadServerApplication.run(SourceFile:417)
[*]2011-10-02 08:11:49 [SEVERE] Unexpected exception
[*]java.lang.ArrayIndexOutOfBoundsException: 50
[*]at net.minecraft.server.Chunk.c(Chunk.java:556)
[*]at net.minecraft.server.World.isChunkLoaded(World.java:494)
[*]at net.minecraft.server.World.d(World.java:1905)
[*]at net.minecraft.server.World.b(World.java:1981)
[*]at net.minecraft.server.World.p(World.java:1898)
[*]at net.minecraft.server.World.i(World.java:1881)
[*]at net.minecraft.server.World.doTick(World.java:1638)
[*]at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:454)
[*]at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:374)
[*]at net.minecraft.server.ThreadServerApplication.run(SourceFile:417)
[*]2011-10-02 09:04:46 [INFO] Stopping server 

I edited the post to show the actual error, the last one wasn't the right one.

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

@tdog158 What plugins do you have ?

 

This more likely seems like a corrupted chunk rather than a bad plugin.

 

I have essentials, worldedit, and worldguard. I disabled we and wg but the server still crashed. I'm using bukkit build 1185. I have 2 different maps (using mineos+) and my creative world did this before, and now the survival map is doing it. When I got rid of the creative map and let it make a new one, the problems stopped. Any ideas?

It would seem that I fell off the second page :{

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

I had something similar with a corrupted map. I generated a new one, and copied the Region folder from the old one. I had to run chunkster to fix some chunk errors, and the spawn point is different, but it seems to be working fine.

 

@tdog158
I wrote to you yesterday suggesting corrupted chunk, maybe you should read what is posted to you?

 

Well it didn't really help. I ran that chunkster thing and all the chunks were fine. When I join my server I just fly around in blackness then I get an error in my client and the server crashes.