05.11 01:44:55 [Multicraft] Skipped 1 lines due to rate limit (30/s)
05.11 01:44:48 [Server] SEVERE at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:428)
05.11 01:44:48 [Server] SEVERE at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:495)
05.11 01:44:48 [Server] SEVERE at net.minecraft.server.DedicatedServer.r(DedicatedServer.java:215)
05.11 01:44:48 [Server] SEVERE at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:578)
05.11 01:44:48 [Server] SEVERE at net.minecraft.server.DedicatedServerConnection.b(SourceFile:30)
05.11 01:44:48 [Server] SEVERE at net.minecraft.server.ServerConnection.b(SourceFile:35)
05.11 01:44:48 [Server] SEVERE at net.minecraft.server.NetServerHandler.d(NetServerHandler.java:111)
05.11 01:44:48 [Server] SEVERE at net.minecraft.server.NetworkManager.b(NetworkManager.java:282)
05.11 01:44:48 [Server] SEVERE at net.minecraft.server.Packet3Chat.handle(Packet3Chat.java:44)
05.11 01:44:48 [Server] SEVERE at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:806)
05.11 01:44:48 [Server] SEVERE at net.minecraft.server.NetServerHandler.chat(NetServerHandler.java:824)
05.11 01:44:48 [Server] SEVERE at net.minecraft.server.NetServerHandler.handleCommand(NetServerHandler.java:911)
05.11 01:44:48 [Server] SEVERE at org.bukkit.craftbukkit.CraftServer.dispatchCommand(CraftServer.java:504)
05.11 01:44:48 [Server] SEVERE at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:185)
05.11 01:44:48 [Server] SEVERE at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44)
05.11 01:44:48 [Server] SEVERE at com.onarandombox.MultiverseCore.MultiverseCore.onCommand(MultiverseCore.java:867)
05.11 01:44:48 [Server] SEVERE at com.pneumaticraft.commandhandler.multiverse.CommandHandler.locateAndRunCommand(CommandHandler.java:93)
05.11 01:44:48 [Server] SEVERE at com.pneumaticraft.commandhandler.multiverse.CommandHandler.processFoundCommands(CommandHandler.java:143)
05.11 01:44:48 [Server] SEVERE at com.pneumaticraft.commandhandler.multiverse.CommandHandler.checkAndRunCommand(CommandHandler.java:279)
05.11 01:44:48 [Server] SEVERE at com.onarandombox.MultiverseCore.commands.CreateCommand.runCommand(CreateCommand.java:106)
05.11 01:44:48 [Server] SEVERE at com.onarandombox.MultiverseCore.utils.WorldManager.getChunkGenerator(WorldManager.java:250)
05.11 01:44:48 [Server] SEVERE at com.khorn.terraincontrol.bukkit.TCPlugin.getDefaultWorldGenerator(TCPlugin.java:81)
05.11 01:44:48 [Server] SEVERE at com.khorn.terraincontrol.bukkit.TCPlugin.CreateSettings(TCPlugin.java:124)
05.11 01:44:48 [Server] SEVERE at com.khorn.terraincontrol.configuration.WorldConfig.(WorldConfig.java:168)
05.11 01:44:48 [Server] SEVERE at com.khorn.terraincontrol.configuration.WorldConfig.ReadConfigSettings(WorldConfig.java:404)
05.11 01:44:48 [Server] SEVERE at com.khorn.terraincontrol.configuration.WorldConfig$TerrainMode.valueOf(WorldConfig.java:916)
05.11 01:44:48 [Server] SEVERE at java.lang.Enum.valueOf(Unknown Source)
05.11 01:44:48 [Server] SEVERE java.lang.NullPointerException: Name is null
05.11 01:44:48 [Server] INFO TerrainControl: Loading settings for test

From running "/mv create your_world_name normal -g TerrainControl"

We have Bukkit 1.4 Beta Build, and running the dev version of Terrain Control. But it appears to occur on the other version of it, too.

Plugins (42): WorldBorder, ChunkViewer, WorldEdit, TagAPI, PluginManager, Buycraft, Vault, Multiverse-Core, PermissionsEx, LogBlock, TerrainControl, SuperSimpleSpawners, LWC, WorldGuard, TreeAssist, MagicSpells, MobSpawnControl, BKCommonLib, DailyBonus, GriefPrevention, Votifier, mcMMO, ForcedGrammar, FoundDiamonds, CleanroomGenerator, Essentials, Citizens, EssentialsSpawn, Multiverse-Portals, Multiverse-Inventories, NameTags, Multiverse-NetherPortals, VanishNoPacket, IslandWorld, AutoRank, MagicSpellsShop, ItemsForVote, PayDay, ChestShop, GPRealEstate, EssentialsChat, Factions

Which dev version? The latest version Khoorn posted isn't compatible with 1.4.

Is there another version that is? I'd be welcome to test it.

There seemed to be two causes for this:

1. Another plugin had a bug that prevented Multiverse from correctly loading worlds.
2. The Terrain Control version was outdated. As always, look in the New versions thread for development builds.