Add-In API: Events not firing

Hello

I'm putting together a skeleton Add-In using the MessengerClient API, which is simple enough. But once I get it up and running, none of the events are firing with the exception of ShowOptionsDialog.

The code I'm using:

using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;

using Microsoft.Messenger;

namespace MsnAddin
{
public class MyAddIn: IMessengerAddIn
{
private MessengerClient _client;

public void Initialize(MessengerClient messenger)
{
_client = messenger;
_client.AddInProperties.FriendlyName = "MyAddin";
_client.IncomingTextMessage += new EventHandler<IncomingTextMessageEventArgs>(this.OnIncomingMessage);
_client.StatusChanged += new EventHandler<StatusChangedEventArgs>(this.OnStatusChanged);
_client.ShowOptionsDialog += new EventHandler(this.OnSettings);
}

public void OnIncomingMessage(object sender, IncomingTextMessageEventArgs args)
{
MessageBox.Show("Incoming Message");
}

void OnStatusChanged(object sender, StatusChangedEventArgs e)
{
if (e.User.FriendlyName == _client.LocalUser.FriendlyName) ;
MessageBox.Show("Status Change");
}

void OnSettings(object sender, EventArgs e)
{
MessageBox.Show("Configuration");
}
}
}

Once running, the "Settings..." button in the Options dialog box launches the message box as expected. But the other events never fire under expected circumstances.

I get the same result on two different machines. I must be missing something...any ideas

I'm using .NET framework 2.0 and Messenger Liv 8.0 build 8.0.0812.00.

Thanks in advance