Mortuus Terra Error

Here's the error i get:
2012-05-18 01:54:25 [INFO] <RunningDingos> wda 2012-05-18 01:54:56 [INFO] RunningDingos lost connection: disconnect.quitting 2012-05-18 01:54:56 [INFO] Connection reset 2012-05-18 01:54:56 [INFO] [MCBans] RunningDingos has disconnected! 2012-05-18 01:57:23 [INFO] [MCBans] RunningDingos has connected! 2012-05-18 01:57:23 [INFO] RunningDingos [/80.192.51.50:52797] logged in with entity id 7039 at ([CityWorld] -1248.45384051823, 10.0, 763.608358423956) 2012-05-18 01:57:23 [INFO] [Server] Welcome back, RunningDingos 2012-05-18 01:57:23 [INFO] Unknown command. Type "help" for help. 2012-05-18 01:57:23 [INFO] [CONSOLE->RunningDingos] Hey there, RunningDingos! 2012-05-18 01:57:23 [INFO] Unknown command. Type "help" for help. 2012-05-18 01:57:23 [INFO] [CONSOLE->RunningDingos] Welcome to DwarfCraft 2012-05-18 01:57:23 [INFO] Unknown command. Type "help" for help. 2012-05-18 01:57:34 [SEVERE] null org.bukkit.command.CommandException: Unhandled exception executing command 'mt' in plugin MortuusTerra v1.06 at org.bukkit.command.PluginCommand.execute(PluginCommand.java:42) at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:166) at org.bukkit.craftbukkit.CraftServer.dispatchCommand(CraftServer.java:479) at net.minecraft.server.NetServerHandler.handleCommand(NetServerHandler.java:821) at net.minecraft.server.NetServerHandler.chat(NetServerHandler.java:781) at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:764) at net.minecraft.serverhook.NetServerHandlerProxy.a(NetServerHandlerProxy.java:141) at net.minecraft.server.Packet3Chat.handle(Packet3Chat.java:34) at net.minecraft.server.NetworkManager.b(NetworkManager.java:229) at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:113) at net.minecraft.serverhook.NetServerHandlerProxy.a(NetServerHandlerProxy.java:83) at net.minecraft.server.NetworkListenThread.a(NetworkListenThread.java:78) at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:551) at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:449) at net.minecraft.server.ThreadServerApplication.run(SourceFile:492) Caused by: java.lang.NullPointerException at me.wickersty.MortuusTerra.MortuusTerra.onCommand(MortuusTerra.java:374) at org.bukkit.command.PluginCommand.execute(PluginCommand.java:40) ... 14 more

the features of the plugin do not work and when I try a command I get an internal error.

 

More info please, like the plugins you're using and code if it's a custom one.

 

Plugin's I have:
Backup 1.8.9 - Meldanor, gamerx, lycano

CityWorld 0.63 - DaddyChurchill

Essentials 2.9.1

EssentialsChat 2.8.3

Permissions 3.1.6 - Unknown Author

GroupManager 1.9 (2.8.4) (Phoenix) - Unknown Author

FalseBookBlock 0.93.1alpha - Unknown Author

FalseBookCore 0.93.1alpha - Unknown Author

FalseBookIC 0.93.1alpha - Unknown Author

Gates 1.1a - Tyrotoxism

LogBlock '1.41' - DiddiZ

LogBlockQuestioner 0.02 - DiddiZ

mcbans 3.7 - Firestar and Crashdoom

BukkitCompat r20A - PhonicUK

MortuusTerra 1.06 - wickersty

NoCheatPlus 3.6.1 - Evenprime, Juliui

olyNauseate 0.1.1 - Unknown Author

Orebfuscator 1.4.5 - lishid

PlgSetspawn 5.0 - Plague

Ptweaks 1.8 - Unknown Author

RadioBeacon 1.2 - Unknown Author

Vault 1.2.5-b59 - cereal, Sleaker, mung3r

WorldEdit 5.3 - Unknown Author

WorldGuard "5.5.2-SNAPSHOT" - Unknown Author

 

Post a ticket on the dev page of MortuusTerra.