Bad chunks. Possible to fix?

Code:

2011-02-27 21:50:03 [INFO] Chunk (0, 149) stored at  (5, 139)
2011-02-27 21:50:03 [INFO] net.minecraft.server.Chunk
2011-02-27 21:50:03 [SEVERE] java.lang.Throwable
2011-02-27 21:50:03 [SEVERE]     at net.minecraft.server.ChunkProviderServer.b(ChunkProviderServer.java:115)
2011-02-27 21:50:03 [SEVERE]     at net.minecraft.server.World.c(World.java:202)
2011-02-27 21:50:03 [SEVERE]     at net.minecraft.server.World.h(World.java:1470)
2011-02-27 21:50:03 [SEVERE]     at net.minecraft.server.World.g(World.java:1434)
2011-02-27 21:50:03 [SEVERE]     at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:329)
2011-02-27 21:50:03 [SEVERE]     at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:253)
2011-02-27 21:50:03 [SEVERE]     at net.minecraft.server.ThreadServerApplication.run(SourceFile:366)
2011-02-27 21:50:03 [INFO] Chunk (0, 149) stored at  (6, 136)
2011-02-27 21:50:03 [SEVERE] java.lang.Throwable
2011-02-27 21:50:03 [SEVERE]     at net.minecraft.server.LongHashtable.get(LongHashtable.java:31)
2011-02-27 21:50:03 [SEVERE]     at net.minecraft.server.ChunkProviderServer.b(ChunkProviderServer.java:107)
2011-02-27 21:50:03 [SEVERE]     at net.minecraft.server.World.c(World.java:202)
2011-02-27 21:50:03 [SEVERE]     at net.minecraft.server.World.h(World.java:1470)
2011-02-27 21:50:03 [SEVERE]     at net.minecraft.server.World.g(World.java:1434)
2011-02-27 21:50:03 [SEVERE]     at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:329)
2011-02-27 21:50:03 [SEVERE]     at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:253)
2011-02-27 21:50:03 [SEVERE]     at net.minecraft.server.ThreadServerApplication.run(SourceFile:366)

Running on Windows 7 Ultimate x64 build 7600

Java version "1.6.0_23"
Java(TM) SE Runtime Environment (build 1.6.0_23-b05
Java HotSpot(TM) 64-Bit Server VM (build 19.0-b09, mixed mode)

Build-Jdk: 1.6.0_20
Implementation-Title: CraftBukkit
Implementation-Vendor: Bukkit Team
Implementation-Version: git-Bukkit-0.0.0-457-g434ce6d-b439jnks

Plugins:
-ClothColor_latest
DeathChest
dynmap
Essentials
EssentialsBan
EssentialsChat
EssentialsEco
EssentialsGod
EssentialsGroupBridge
EssentialsHelp
EssentialsHome
EssentialsProtect
EssentialsServerlist
EssentialsSpawn
EssentialsTele
EssentialsWarp
FakePermissions
Flashlight v1-0-3
GroupManager
LWC
Multiverse
Slowhealth
Tpack
VoidMage
WorldEdit

Yes, I understand that Essentials is buggy, stupid, etc. Whatever. I don't need to hear that. I'm almost sure the problem lies either in how Minecraft Server is rendering a specific chunk, (0, 149), or that Dynmap is being retarded and I need to wipe the files from the web folder.

The map in question is fairly large, and would require hours in an editor to re-locate everyone's buildings over to a new map. Can this map be salvaged without moving all my users' buildings to a new server?

Any help is much appreciated. Thank you guys for helping people out of tight squeezes.
--- merged: Feb 28, 2011 5:53 AM ---
Update: Shortly after the writing, a user noticed some "griefing" done to one of his structures. I counted the blocks and it was a 16x16 area, which is the size of a chunk. I closed the server, opened up MC edit, and restored the chunk from a backup. Hope this helps anyone with the same problem.

 

I have the same issue but I have no backup so if you knew any other way that'd be great...

 

You can find the chunks in MCEdit and delete them. Just select the affected chunk, if you can find it, and use the chunk control tool to delete the bad chunk. Paste it over with something nearby.