Plugins not working

02.02 16:40:52 [Server] INFO ImTotallyTechy: FAILED.
02.02 16:40:52 [Server] ERROR Failed to Create/Load the world 'rave'
02.02 16:40:52 [Server] ERROR http://forums.bukkit.org/threads/admin-chunkster.8186/
02.02 16:40:52 [Server] ERROR Try using Chukster to repair your world! 'rave'
02.02 16:40:52 [Server] ERROR The world 'rave' could NOT be loaded because it contains errors!
02.02 16:40:52 [Server] WARN at net.minecraft.server.v1_7_R1.ThreadServerApplication.run(SourceFile:617)
02.02 16:40:52 [Server] WARN at net.minecraft.server.v1_7_R1.MinecraftServer.run(MinecraftServer.java:457)
02.02 16:40:52 [Server] WARN at net.minecraft.server.v1_7_R1.MinecraftServer.t(MinecraftServer.java:545)
02.02 16:40:52 [Server] WARN at net.minecraft.server.v1_7_R1.DedicatedServer.u(DedicatedServer.java:250)
02.02 16:40:52 [Server] WARN at net.minecraft.server.v1_7_R1.MinecraftServer.u(MinecraftServer.java:655)
02.02 16:40:52 [Server] WARN at net.minecraft.server.v1_7_R1.ServerConnection.c(SourceFile:134)
02.02 16:40:52 [Server] WARN at net.minecraft.server.v1_7_R1.NetworkManager.a(NetworkManager.java:146)
02.02 16:40:52 [Server] WARN at net.minecraft.server.v1_7_R1.PacketPlayInChat.handle(PacketPlayInChat.java:47)
02.02 16:40:52 [Server] WARN at net.minecraft.server.v1_7_R1.PacketPlayInChat.a(PacketPlayInChat.java:28)
02.02 16:40:52 [Server] WARN at net.minecraft.server.v1_7_R1.PlayerConnection.a(PlayerConnection.java:814)
02.02 16:40:52 [Server] WARN at net.minecraft.server.v1_7_R1.PlayerConnection.handleCommand(PlayerConnection.java:932)
02.02 16:40:52 [Server] WARN at org.bukkit.craftbukkit.v1_7_R1.CraftServer.dispatchCommand(CraftServer.java:542)
02.02 16:40:52 [Server] WARN at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:196)
02.02 16:40:52 [Server] WARN at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44)
02.02 16:40:52 [Server] WARN at com.onarandombox.MultiverseCore.MultiverseCore.onCommand(MultiverseCore.java:894)
02.02 16:40:52 [Server] WARN at com.pneumaticraft.commandhandler.multiverse.CommandHandler.locateAndRunCommand(CommandHandler.java:93)
02.02 16:40:52 [Server] WARN at com.pneumaticraft.commandhandler.multiverse.CommandHandler.processFoundCommands(CommandHandler.java:143)
02.02 16:40:52 [Server] WARN at com.pneumaticraft.commandhandler.multiverse.CommandHandler.checkAndRunCommand(CommandHandler.java:279)
02.02 16:40:52 [Server] WARN at com.onarandombox.MultiverseCore.commands.CreateCommand.runCommand(CreateCommand.java:114)
02.02 16:40:52 [Server] WARN at com.onarandombox.MultiverseCore.utils.WorldManager.addWorld(WorldManager.java:229)
02.02 16:40:52 [Server] WARN at com.onarandombox.MultiverseCore.utils.WorldManager.doLoad(WorldManager.java:421)
02.02 16:40:52 [Server] WARN at org.bukkit.WorldCreator.createWorld(WorldCreator.java:239)
02.02 16:40:52 [Server] WARN at org.bukkit.Bukkit.createWorld(Bukkit.java:228)
02.02 16:40:52 [Server] WARN at org.bukkit.craftbukkit.v1_7_R1.CraftServer.createWorld(CraftServer.java:769)
02.02 16:40:52 [Server] WARN at net.cyberninjapiggy.apocalyptic.generator.RavagedChunkGenerator.getDefaultPopulators(RavagedChunkGenerator.java:233)
02.02 16:40:52 [Server] WARN java.lang.NullPointerException
02.02 16:40:51 [Server] INFO Loading World & Settings - 'rave' - Env: NORMAL - Type: NORMAL & generator: Apocalyptic
02.02 16:40:51 [Server] INFO ImTotallyTechy: Starting creation of world 'rave'...