Can somebody help and please tell me what causes this and how i can fix it. :/ If the video doesnt work, just tell me. Code: 2011-12-30 03:07:36 [INFO] Starting minecraft server version 1.0.1 2011-12-30 03:07:36 [INFO] Loading properties 2011-12-30 03:07:36 [INFO] Starting Minecraft server on *:25565 2011-12-30 03:07:36 [WARNING] **** SERVER IS RUNNING IN OFFLINE/INSECURE MODE! 2011-12-30 03:07:36 [WARNING] The server will make no attempt to authenticate usernames. Beware. 2011-12-30 03:07:36 [WARNING] While this makes the game possible to play without internet access, it also opens up the ability for hackers to connect with any username they choose. 2011-12-30 03:07:36 [WARNING] To change this, set "online-mode" to "true" in the server.properties file. 2011-12-30 03:07:37 [INFO] This server is running Craftbukkit version git-Bukkit-1.0.1-R1-14-g3bdd14a-b1613jnks (MC: 1.0.1) (Implementing API version 1.0.1-R2-SNAPSHOT) 2011-12-30 03:07:38 [INFO] MLog clients using java 1.4+ standard logging. 2011-12-30 03:07:39 [INFO] [Permissions] (Yeti) was initialized. 2011-12-30 03:07:39 [INFO] [Permissions] version [3.1.6] (Yeti) loaded 2011-12-30 03:07:39 [INFO] Preparing level "world" 2011-12-30 03:07:39 [INFO] Default game type: 0 2011-12-30 03:07:39 [INFO] Preparing start region for level 0 (Seed: 3053216586855355907) 2011-12-30 03:07:40 [INFO] Preparing spawn area: 4% 2011-12-30 03:07:41 [INFO] Chunk file at 19,99 is in the wrong location; relocating. (Expected 19, 99, got 16, 97) 2011-12-30 03:07:41 [SEVERE] Chunk (16, 97) stored at (19, 99) in world 'world' 2011-12-30 03:07:41 [SEVERE] net.minecraft.server.Chunk 2011-12-30 03:07:41 [SEVERE] java.lang.Throwable 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.ChunkProviderServer.getOrCreateChunk(ChunkProviderServer.java:112) 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.Chunk.a(Chunk.java:815) 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:96) 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:319) 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:165) 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:399) 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.ThreadServerApplication.run(SourceFile:457) 2011-12-30 03:07:41 [SEVERE] Chunk (16, 97) stored at (19, 99) in world 'world' 2011-12-30 03:07:41 [SEVERE] net.minecraft.server.Chunk 2011-12-30 03:07:41 [SEVERE] java.lang.Throwable 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.ChunkProviderServer.getOrCreateChunk(ChunkProviderServer.java:112) 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.Chunk.a(Chunk.java:811) 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:96) 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:319) 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:165) 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:399) 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.ThreadServerApplication.run(SourceFile:457) 2011-12-30 03:07:41 [SEVERE] Chunk (16, 97) stored at (19, 99) in world 'world' 2011-12-30 03:07:41 [SEVERE] net.minecraft.server.Chunk 2011-12-30 03:07:41 [SEVERE] java.lang.Throwable 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.ChunkProviderServer.getOrCreateChunk(ChunkProviderServer.java:112) 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.Chunk.a(Chunk.java:819) 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:96) 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:319) 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:165) 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:399) 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.ThreadServerApplication.run(SourceFile:457) 2011-12-30 03:07:41 [INFO] Chunk file at 22,96 is in the wrong location; relocating. (Expected 22, 96, got 16, 97) 2011-12-30 03:07:41 [SEVERE] Chunk (16, 97) stored at (22, 96) in world 'world' 2011-12-30 03:07:41 [SEVERE] net.minecraft.server.Chunk 2011-12-30 03:07:41 [SEVERE] java.lang.Throwable 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.ChunkProviderServer.getOrCreateChunk(ChunkProviderServer.java:112) 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.Chunk.a(Chunk.java:815) 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:96) 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:319) 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:165) 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:399) 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.ThreadServerApplication.run(SourceFile:457) 2011-12-30 03:07:41 [SEVERE] Chunk (16, 97) stored at (22, 96) in world 'world' 2011-12-30 03:07:41 [SEVERE] net.minecraft.server.Chunk 2011-12-30 03:07:41 [SEVERE] java.lang.Throwable 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.ChunkProviderServer.getOrCreateChunk(ChunkProviderServer.java:112) 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.Chunk.a(Chunk.java:811) 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:96) 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:319) 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:165) 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:399) 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.ThreadServerApplication.run(SourceFile:457) 2011-12-30 03:07:41 [SEVERE] Chunk (16, 97) stored at (22, 96) in world 'world' 2011-12-30 03:07:41 [SEVERE] net.minecraft.server.Chunk 2011-12-30 03:07:41 [SEVERE] java.lang.Throwable 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.ChunkProviderServer.getOrCreateChunk(ChunkProviderServer.java:112) 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.Chunk.a(Chunk.java:819) 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:96) 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:319) 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:165) 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:399) 2011-12-30 03:07:41 [SEVERE] at net.minecraft.server.ThreadServerApplication.run(SourceFile:457) 2011-12-30 03:07:41 [INFO] Preparing spawn area: 36% 2011-12-30 03:07:42 [INFO] Preparing spawn area: 73% 2011-12-30 03:07:43 [INFO] Preparing start region for level 1 (Seed: 3053216586855355907) 2011-12-30 03:07:43 [INFO] Preparing spawn area: 8% 2011-12-30 03:07:44 [INFO] Preparing spawn area: 52% 2011-12-30 03:07:45 [INFO] Preparing spawn area: 97% 2011-12-30 03:07:45 [INFO] Preparing start region for level 2 (Seed: 3053216586855355907) 2011-12-30 03:07:46 [INFO] Preparing spawn area: 57% 2011-12-30 03:07:47 [INFO] [AuthMe] Using flatfile as datasource! 2011-12-30 03:07:47 [INFO] [AuthMe] Cache for registrations is enabled! 2011-12-30 03:07:47 [INFO] [AuthMe] 2 registered players loaded in 0.04 seconds! 2011-12-30 03:07:47 [INFO] [AuthMe] Version 0.72 was successfully loaded! 2011-12-30 03:07:48 [INFO] File not found: plugins\Essentials\jail.yml 2011-12-30 03:07:48 [INFO] Loaded Essentials build 2.7.2 by: Zenexer, ementalo, Aelux, Brettflan, KimKandor, snowleo, ceulemans, Xeology, KHobbits 2011-12-30 03:07:48 [INFO] Essentials: Using Permissions 3 based permissions. 2011-12-30 03:07:48 [INFO] Loaded EssentialsChat build 2.7.2 by: essentials team 2011-12-30 03:07:48 [INFO] Initializing c3p0-0.9.1.2 [built 21-May-2007 15:04:56; debug? true; trace: 10] 2011-12-30 03:07:49 [INFO] Loaded EssentialsProtect build 2.7.2 by: essentials team 2011-12-30 03:07:49 [INFO] Loaded EssentialsSpawn build 2.7.2 by: essentials team 2011-12-30 03:07:49 [INFO] [Password] is initializing. 2011-12-30 03:07:49 [INFO] Found and will use plugin Permissions v3.1.6 2011-12-30 03:07:49 [INFO] Reading config. 2011-12-30 03:07:52 [INFO] Cannot connect to MySQL. 2011-12-30 03:07:52 [INFO] WorldEdit 5.0 enabled. 2011-12-30 03:07:52 [INFO] WEPIF: Updated config file 2011-12-30 03:07:52 [INFO] WEPIF: Permissions plugin detected! Using Permissions plugin for permissions. 2011-12-30 03:07:52 [INFO] WEPIF: Permissions plugin detected! Using Permissions plugin for permissions. 2011-12-30 03:07:52 [INFO] WEPIF: Permissions plugin detected! Using Permissions plugin for permissions. 2011-12-30 03:07:52 [INFO] WorldGuard: (world) Single session is enforced. 2011-12-30 03:07:52 [INFO] WorldGuard: (world) TNT ignition is PERMITTED. 2011-12-30 03:07:52 [INFO] WorldGuard: (world) Lighters are PERMITTED. 2011-12-30 03:07:52 [INFO] WorldGuard: (world) Lava fire is blocked. 2011-12-30 03:07:53 [INFO] WorldGuard: (world) Fire spread is UNRESTRICTED. 2011-12-30 03:07:53 [INFO] WorldGuard: Loaded configuration for world 'world" 2011-12-30 03:07:53 [INFO] WorldGuard: (world_nether) Single session is enforced. 2011-12-30 03:07:53 [INFO] WorldGuard: (world_nether) TNT ignition is PERMITTED. 2011-12-30 03:07:53 [INFO] WorldGuard: (world_nether) Lighters are PERMITTED. 2011-12-30 03:07:53 [INFO] WorldGuard: (world_nether) Lava fire is blocked. 2011-12-30 03:07:53 [INFO] WorldGuard: (world_nether) Fire spread is UNRESTRICTED. 2011-12-30 03:07:53 [INFO] WorldGuard: Loaded configuration for world 'world_nether" 2011-12-30 03:07:53 [INFO] WorldGuard: (world_the_end) Single session is enforced. 2011-12-30 03:07:53 [INFO] WorldGuard: (world_the_end) TNT ignition is PERMITTED. 2011-12-30 03:07:53 [INFO] WorldGuard: (world_the_end) Lighters are PERMITTED. 2011-12-30 03:07:53 [INFO] WorldGuard: (world_the_end) Lava fire is blocked. 2011-12-30 03:07:53 [INFO] WorldGuard: (world_the_end) Fire spread is UNRESTRICTED. 2011-12-30 03:07:53 [INFO] WorldGuard: Loaded configuration for world 'world_the_end" 2011-12-30 03:07:53 [INFO] WorldGuard: 1 regions loaded for 'world' 2011-12-30 03:07:53 [INFO] WorldGuard: 0 regions loaded for 'world_nether' 2011-12-30 03:07:53 [INFO] WorldGuard: 0 regions loaded for 'world_the_end' 2011-12-30 03:07:53 [INFO] WorldGuard 5.4 enabled. 2011-12-30 03:07:53 [INFO] [iChat] Found Permissions v3.1.6 2011-12-30 03:07:53 [INFO] iChat (v2.4.5) enabled 2011-12-30 03:07:53 [INFO] Server permissions file permissions.yml is empty, ignoring it 2011-12-30 03:07:53 [INFO] Done (1,421s)! For help, type "help" or "?" 2011-12-30 03:07:53 [SEVERE] Chunk (16, 97) stored at (19, 99) in world 'world' 2011-12-30 03:07:53 [SEVERE] net.minecraft.server.Chunk 2011-12-30 03:07:53 [SEVERE] java.lang.Throwable 2011-12-30 03:07:53 [SEVERE] at net.minecraft.server.ChunkProviderServer.getOrCreateChunk(ChunkProviderServer.java:112) 2011-12-30 03:07:53 [SEVERE] at net.minecraft.server.World.getChunkAt(World.java:333) 2011-12-30 03:07:53 [SEVERE] at net.minecraft.server.World.a(World.java:2387) 2011-12-30 03:07:53 [SEVERE] at net.minecraft.server.EntityAnimal.findTarget(SourceFile:177) 2011-12-30 03:07:53 [SEVERE] at net.minecraft.server.EntityCreature.m_(EntityCreature.java:35) 2011-12-30 03:07:53 [SEVERE] at net.minecraft.server.EntityLiving.d(EntityLiving.java:887) 2011-12-30 03:07:53 [SEVERE] at net.minecraft.server.EntityAnimal.d(SourceFile:43) 2011-12-30 03:07:53 [SEVERE] at net.minecraft.server.EntityLiving.w_(EntityLiving.java:297) 2011-12-30 03:07:53 [SEVERE] at net.minecraft.server.World.entityJoinedWorld(World.java:1253) 2011-12-30 03:07:53 [SEVERE] at net.minecraft.server.WorldServer.entityJoinedWorld(WorldServer.java:107) 2011-12-30 03:07:53 [SEVERE] at net.minecraft.server.World.playerJoinedWorld(World.java:1235) 2011-12-30 03:07:53 [SEVERE] at net.minecraft.server.World.tickEntities(World.java:1142) 2011-12-30 03:07:53 [SEVERE] at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:518) 2011-12-30 03:07:53 [SEVERE] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:425) 2011-12-30 03:07:53 [SEVERE] at net.minecraft.server.ThreadServerApplication.run(SourceFile:457) 2011-12-30 03:07:53 [SEVERE] Chunk (16, 97) stored at (22, 96) in world 'world' 2011-12-30 03:07:53 [SEVERE] net.minecraft.server.Chunk 2011-12-30 03:07:53 [SEVERE] java.lang.Throwable 2011-12-30 03:07:53 [SEVERE] at net.minecraft.server.ChunkProviderServer.getOrCreateChunk(ChunkProviderServer.java:112) 2011-12-30 03:07:53 [SEVERE] at net.minecraft.server.World.getChunkAt(World.java:333) 2011-12-30 03:07:53 [SEVERE] at net.minecraft.server.World.getTypeId(World.java:280) 2011-12-30 03:07:53 [SEVERE] at net.minecraft.server.TileEntityChest.h(TileEntityChest.java:126) 2011-12-30 03:07:53 [SEVERE] at net.minecraft.server.TileEntityChest.l_(TileEntityChest.java:177) 2011-12-30 03:07:53 [SEVERE] at net.minecraft.server.World.tickEntities(World.java:1168) 2011-12-30 03:07:53 [SEVERE] at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:518) 2011-12-30 03:07:53 [SEVERE] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:425) 2011-12-30 03:07:53 [SEVERE] at net.minecraft.server.ThreadServerApplication.run(SourceFile:457) 2011-12-30 03:07:54 [SEVERE] Chunk (16, 97) stored at (19, 99) in world 'world' 2011-12-30 03:07:54 [SEVERE] net.minecraft.server.Chunk 2011-12-30 03:07:54 [SEVERE] java.lang.Throwable 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.ChunkProviderServer.getOrCreateChunk(ChunkProviderServer.java:112) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.World.getChunkAt(World.java:333) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.World.a(World.java:2387) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.EntityAnimal.findTarget(SourceFile:177) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.EntityCreature.m_(EntityCreature.java:35) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.EntityLiving.d(EntityLiving.java:887) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.EntityAnimal.d(SourceFile:43) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.EntityLiving.w_(EntityLiving.java:297) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.World.entityJoinedWorld(World.java:1253) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.WorldServer.entityJoinedWorld(WorldServer.java:107) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.World.playerJoinedWorld(World.java:1235) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.World.tickEntities(World.java:1142) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:518) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:425) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.ThreadServerApplication.run(SourceFile:457) 2011-12-30 03:07:54 [SEVERE] Chunk (16, 97) stored at (22, 96) in world 'world' 2011-12-30 03:07:54 [SEVERE] net.minecraft.server.Chunk 2011-12-30 03:07:54 [SEVERE] java.lang.Throwable 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.ChunkProviderServer.getOrCreateChunk(ChunkProviderServer.java:112) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.World.getChunkAt(World.java:333) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.ChunkCache.<init>(SourceFile:28) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.World.a(World.java:2500) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.EntityCreature.C(EntityCreature.java:188) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.EntityCreature.m_(EntityCreature.java:80) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.EntityLiving.d(EntityLiving.java:887) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.EntityAnimal.d(SourceFile:43) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.EntityLiving.w_(EntityLiving.java:297) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.World.entityJoinedWorld(World.java:1253) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.WorldServer.entityJoinedWorld(WorldServer.java:107) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.World.playerJoinedWorld(World.java:1235) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.World.tickEntities(World.java:1142) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:518) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:425) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.ThreadServerApplication.run(SourceFile:457) 2011-12-30 03:07:54 [SEVERE] Chunk (16, 97) stored at (19, 99) in world 'world' 2011-12-30 03:07:54 [SEVERE] net.minecraft.server.Chunk 2011-12-30 03:07:54 [SEVERE] java.lang.Throwable 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.ChunkProviderServer.getOrCreateChunk(ChunkProviderServer.java:112) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.World.getChunkAt(World.java:333) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.World.a(World.java:2387) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.EntityAnimal.findTarget(SourceFile:177) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.EntityCreature.m_(EntityCreature.java:35) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.EntityLiving.d(EntityLiving.java:887) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.EntityAnimal.d(SourceFile:43) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.EntityLiving.w_(EntityLiving.java:297) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.World.entityJoinedWorld(World.java:1253) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.WorldServer.entityJoinedWorld(WorldServer.java:107) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.World.playerJoinedWorld(World.java:1235) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.World.tickEntities(World.java:1142) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:518) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:425) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.ThreadServerApplication.run(SourceFile:457) 2011-12-30 03:07:54 [SEVERE] Chunk (16, 97) stored at (19, 99) in world 'world' 2011-12-30 03:07:54 [SEVERE] net.minecraft.server.Chunk 2011-12-30 03:07:54 [SEVERE] java.lang.Throwable 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.ChunkProviderServer.getOrCreateChunk(ChunkProviderServer.java:112) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.World.getChunkAt(World.java:333) 2011-12-30 03:07:54 [SEVERE] at net.minecraft.server.World.a(World.java:2387)
seriousely, do you think we can read this log??? post a part of it please so we can look at the error.
could also try to use MCEdit or Chunkster, before trying either make a backup of the corrupted map as if one fails it may permanently mess it up rendering the other program unable to fix it though failing that if you have a backup restore from than, or make a new world