Random Chunks Disappearing/Spawning

Hello,

Today a part of my members house randomly vanished, with no trace of what actually happened. I can see that the user placed blocks there, but there are no traces of them being removed with HawkEye. The missing area was also a perfect square, so it appears to be some error. But I have no idea what would actually cause this. Also, I'm the only on the server with World Edit, so it wasn't a user mistake/action.



The player was naturally upset, and left the game. So clearly this is a serious issue that I need resolved, especially if it continues to happen.

I searched the log file for anything that mentioned "chunk", and this is what I found. I don't know if it has anything to do with what happened here.

Code:

2012-04-27 20:11:53 [SEVERE]    at net.minecraft.server.ChunkRegionLoader.a(ChunkRegionLoader.java:69)
 
2012-04-27 20:11:53 [SEVERE]    at net.minecraft.server.ChunkRegionLoader.a(ChunkRegionLoader.java:52)
 
2012-04-27 20:11:53 [SEVERE]    at net.minecraft.server.ChunkProviderServer.loadChunk(ChunkProviderServer.java:135)
 
2012-04-27 20:11:53 [SEVERE]    at net.minecraft.server.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:78)
 
2012-04-27 20:11:53 [SEVERE]    at net.minecraft.server.ServerConfigurationManager.c(ServerConfigurationManager.java:120)
 
2012-04-27 20:11:53 [SEVERE]    at net.minecraft.server.NetLoginHandler.b(NetLoginHandler.java:129)
 
2012-04-27 20:11:53 [SEVERE]    at net.minecraft.server.NetLoginHandler.a(NetLoginHandler.java:41)
 
2012-04-27 20:11:53 [SEVERE]    at net.minecraft.server.NetworkListenThread.a(NetworkListenThread.java:61)
 
2012-04-27 20:11:53 [SEVERE]    at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:551)
 
2012-04-27 20:11:53 [SEVERE]    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:449)
 
2012-04-27 20:11:53 [SEVERE]    at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)
 
2012-04-27 20:11:53 [INFO] Chunk file at -39,-51 is in the wrong location; relocating. (Expected -39, -51, got -51, -58)
 
2012-04-27 20:11:53 [SEVERE] java.lang.ArrayIndexOutOfBoundsException
 
2012-04-27 20:11:53 [INFO] Chunk file at -45,-53 is in the wrong location; relocating. (Expected -45, -53, got -51, -58)
 
2012-04-27 20:11:53 [SEVERE] java.lang.ArrayIndexOutOfBoundsException

Also, in the past (a few weeks ago) we had chunks randomly popping up like so:


We have the following plugins installed:


I'm also running the following version of Bukkit:

 

It seems to have happened again, in the same exact spot as last time. Although, this time, instead of being an empty chunk, it looked like this.

 

Help? I need a solution to this also!

 

this may be a chunk corruption, but im not sure. try use worldedit to restore chunk from backup.

 

My guess would be that it is Orebfuscator. I've heard of it changing chunks