File name blank when dragging and dropping

I am using Windows 7 32bit with Outlook 2007.  When dragging and dropping an email onto a form, the FileName is blank. This worked in a previous version of Aspose.Email. Please see code below:

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using System.IO;

using System.Reflection;

namespace DragDropTest

{

    public partial class Form1 : Form

    {

        private Aspose.Windows.Forms.FileDropTargetManager asposeFileDropMgr;

        public Form1()

        {

            InitializeComponent();

            this.AllowDrop = true;

        }

        public void HandleApplicationDragDrop(Aspose.Windows.Forms.FileDragEventArgs dragdropArgs)

        {

            for (int stepIndex = 0; stepIndex < dragdropArgs.Files.Count; stepIndex++)

            {

                string documentName = Path.GetFileName(dragdropArgs.Files[stepIndex].FileName);

                MessageBox.Show("The name is " + documentName); //This is blank

            }

        }

        // Aspose hook up

        protected override void OnHandleCreated(EventArgs e)

        {

            this.AllowDrop = true;

            this.asposeFileDropMgr = new Aspose.Windows.Forms.FileDropTargetManager(this);

            this.asposeFileDropMgr.EnsureRegistered(this);

            base.OnHandleCreated(e);

        }

        // Aspose unhook

        protected override void OnHandleDestroyed(EventArgs e)

        {

            this.asposeFileDropMgr.EnsureUnRegistered(this);

            base.OnHandleDestroyed(e);

        }

        protected override void OnDragDrop(DragEventArgs drgevent)

        {

            Aspose.Windows.Forms.FileDragEventArgs fde = drgevent as Aspose.Windows.Forms.FileDragEventArgs;

            if (fde == null)

            {

                return;

            }

            if ((fde.Effect &= DragDropEffects.Copy) != DragDropEffects.Copy)

            {

                return;

            }

            HandleApplicationDragDrop(fde);

        }

    }

}