Bukkit

What steps will reproduce the problem?
1.just installed an hour ago and someone used a /home. no events setup yet.
2.config seen but not changed.
3.

What is the expected output? What do you see instead?
expecting no errors

What version of the product are you using?

2.3

Do you have an error log of what happened?

18:53:41 [SEVERE] Could not pass event NPCRightClickEvent to Dragons Lair
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:341)
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
        at org.bukkit.plugin.TimedRegisteredListener.callEvent(TimedRegisteredListener.java:35)
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:477)
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:462)
        at net.citizensnpcs.listeners.EntityListen.onEntityTarget(EntityListen.java:94)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:339)
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
        at org.bukkit.plugin.TimedRegisteredListener.callEvent(TimedRegisteredListener.java:35)
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:477)
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:462)
        at net.citizensnpcs.listeners.PlayerListen.onPlayerInteractEntity(PlayerListen.java:56)
        at sun.reflect.GeneratedMethodAccessor392.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:339)
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
        at org.bukkit.plugin.TimedRegisteredListener.callEvent(TimedRegisteredListener.java:35)
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:477)
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:462)
        at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:1000)
        at net.minecraftserverhook.NetServerHandlerProxy.a(NetServerHandlerProxy.java:160)
        at net.minecraft.server.Packet7UseEntity.handle(SourceFile:36)
        at net.minecraft.server.NetworkManager.b(NetworkManager.java:282)
        at net.minecraft.server.NetServerHandler.d(NetServerHandler.java:109)
        at net.minecraft.server.ServerConnection.b(SourceFile:35)
        at net.minecraft.server.DedicatedServerConnection.b(SourceFile:30)
        at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:577)
        at net.minecraft.server.DedicatedServer.q(DedicatedServer.java:213)
        at net.minecraft.server.MinecraftServer.p(MinecraftServer.java:473)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:405)
        at net.minecraft.server.ThreadServerApplication.run(SourceFile:539)
Caused by: java.lang.NoSuchMethodError: net.citizensnpcs.api.event.NPCRightClickEvent.getNPC()Lnet/citizensnpcs/api/npc/NPC;
        at de.kumpelblase2.dragonslair.DLCitizenHandler.onNPCTalk(DLCitizenHandler.java:16)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:339)
        ... 35 more
Please provide any additional information below.
CraftBukkit version git-Bukkit-1.3.2-R1.0-1-gec23129-b2380jnks (MC: 1.3.2) (Implementing API version 1.3.2-R1.1-SNAPSHOT

It's probably not caused by the /home command but still... Which version of Citizens are you using?