arcobjects - ArcMap - Strange Behavior When Trying To Wire IActiveViewEvents in IDockableWindow

I can't seem to wire up IActiveViewEvents for an IDockableWindow. I am using a straight out-of-the-box IDockableWindow which inherits BaseCommand. The snippet below shows what I have added to the autogenerated code. Problem is, when I try to run ArcMap, it (the main ArcMap GUI) never loads. Please see attached screenshot to see what I mean.

 public override void OnCreate(object hook)

    {
        if (hook != null)
            m_application = hook as IApplication;

        if (m_application != null)
        {
            SetupDockableWindow();
            base.m_enabled = m_dockableWindow != null;
        }
        else

            base.m_enabled = false;

        IMxDocument mxDoc = (IMxDocument)m_application.Document;
        IActiveViewEvents_Event activeViewEvents = mxDoc.ActiveView as IActiveViewEvents_Event;
        activeViewEvents.ViewRefreshed += new IActiveViewEvents_ViewRefreshedEventHandler(activeViewEvents_ViewRefreshed);
    }

    void activeViewEvents_ViewRefreshed(IActiveView view, esriViewDrawPhase phase, object Data, ESRI.ArcGIS.Geometry.IEnvelope envelope)
    {
        MessageBox.Show("ViewRefreshed");

    }