Emulators Providing Different Results

I am developing an application on windows phone with version 7.1 set as my target build. The problem i am having is that one of the listviews in on of my pages refus to display.

I have debugged to ensure the list gets parsed with contents inside of it . Also the application runs fine when i use a windows 8 emulator. But the same technique used in populating other listviews in other pages of the application work fine on all emulators aprt from this single page that does not display.

I even tried to set the colour of the binding stack panel to see if it will show up and it does but without any content. I am really confused and my code is very perfect. I wonder if any one has seem this issue before with windows phone emulators?

private void countdownClient_DownloadStringCompleted(object sender, DownloadStringCompletedEventArgs e)
    {
        HtmlDocument doc = new HtmlDocument();            
        if (e.Error != null)
        {
            //MessageBox.Show(e.Error.InnerException.Message + "\n Ensure You Have A Working Internet Connection");                
            return;
        }
        doc.LoadHtml(e.Result);
        String noCountdown = "<div><span>Sorry no buses are expected within 30 minutes of this stop.  Please try again later or go to www.tfl.gov.uk</span></div>";

        if (e.Result.Contains(noCountdown))
        {
            //No Buses Expected;
            return;
        }
        else
        {
            HtmlNode stopCountdownNode;
            try
            {
                stopCountdownNode = doc.DocumentNode.SelectSingleNode("//*[contains(@id, 'stopBoard')]").SelectSingleNode("tbody");
            }
            catch (Exception)
            {
                MessageBox.Show("Error Responce From Server");
                return;
            }

            if (stopCountdownNode != null)
            {
                HtmlNodeCollection countdownNodeList = stopCountdownNode.SelectNodes("tr");
                CountDownListBox.ItemsSource = GetCountdownList(countdownNodeList);
            } 
        }
    }

    private ObservableCollection<BusCountdown> GetCountdownList(HtmlNodeCollection countdownNodeList)
    {
        ObservableCollection<BusCountdown> countdownList = new ObservableCollection<BusCountdown>();
        foreach (HtmlNode countDown in countdownNodeList)
        {
            String busName = HttpUtility.HtmlDecode(countDown.SelectSingleNode("*[contains(@class, 'resRoute')]").InnerHtml);
            String busDestination = HttpUtility.HtmlDecode(countDown.SelectSingleNode("*[contains(@class, 'resDir')]").InnerHtml);
            String countDownTime = HttpUtility.HtmlDecode(countDown.SelectSingleNode("*[contains(@class, 'resDue')]").InnerHtml);
            countdownList.Add(new BusCountdown(busName, busDestination, countDownTime));       
        }                                                    
        return countdownList;
    }

    public string GetRandomSlash()
    {
        Random r = new Random();
        String slash = "";
        int rand = r.Next(1, 20);
        for (int i = 0; i < rand; i++)
        {
            slash += "/";
        }
        return slash;
    }

Try setting your class access specifier which you use to bind to public and give it a try. Let me know if it works.

For ex:

public class Bindingclass
{
public string Name{get;set;}
}