Solved Help, please.

When someone logs in/out of my server, I get this in the console.

Code:

2012-02-23 22:26:45 [INFO] Rardical lost connection: disconnect.quitting
2012-02-23 22:26:45 [SEVERE] Could not pass event org.bukkit.event.player.PlayerQuitEvent to MessageChanger
java.lang.NoSuchMethodError: com.nijiko.permissions.PermissionHandler.getUserObject(Ljava/lang/String;Ljava/lang/String;)Lcom/nijiko/permissions/User;
    at de.frozenbrain.MessageChanger.mcPlugin.getMessage(mcPlugin.java:93)
    at de.frozenbrain.MessageChanger.mcPlayerListener.onPlayerQuit(mcPlayerListener.java:58)
    at org.bukkit.plugin.java.JavaPluginLoader$2.execute(JavaPluginLoader.java:277)
    at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:61)
    at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:460)
    at net.minecraft.server.ServerConfigurationManager.disconnect(ServerConfigurationManager.java:176)
    at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:667)
    at net.minecraft.server.NetworkManager.b(NetworkManager.java:231)
    at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:100)
    at net.minecraft.server.NetworkListenThread.a(NetworkListenThread.java:78)
    at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:537)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:435)
    at net.minecraft.server.ThreadServerApplication.run(SourceFile:465)

Could anyone tell me what the problem is and how to fix it?

 

Looks like the issue is with MessageChanger. Try disabling that plugin and restarting the server?

 

That solved the problem, thanks.