lynxeyed_atsu

Hi all.
I'm in a trouble controlling a SDCard(1GB) with FAT16-formatted.
I changed the firmware of my netduino v.4.1.1-alpha usin MFDeploy.exe.
I use GPIO_PIN_D3 as CS-pin of SDCard.
Here's my code. And I could build with no errors.

using System;
using System.Threading;
using Microsoft.SPOT;
using System.IO;
using Microsoft.SPOT.Hardware;
using SecretLabs.NETMF.IO; 
using SecretLabs.NETMF.Hardware;
using SecretLabs.NETMF.Hardware.Netduino;

namespace NetduinoApplication3
{
    public class Program
    {
        public static void Main()
        {
            StorageDevice.MountSD("SD1", SPI_Devices.SPI1, Pins.GPIO_PIN_D3/*CS pin*/);

            string[] directories = System.IO.Directory.GetDirectories(@"\");
            Debug.Print("directory count: " + directories.Length.ToString());

            for (int i = 0; i < directories.Length; i++)
            {
                Debug.Print("directory: " + directories[i]);
            }

            string[] files = System.IO.Directory.GetFiles(@"\SD1");
            Debug.Print("file count: " + files.Length.ToString());

            for (int i = 0; i < files.Length; i++)
            {
                Debug.Print("filename: " + files[i]);
                FileStream fs = new FileStream(files[i], FileMode.Open, FileAccess.Read, FileShare.None, 512);
                StreamReader sr = new StreamReader(fs);
                Debug.Print("contents: " + sr.ReadToEnd());
            }
        }
    }
}

I connected my netduino with "TFT-LCD & SDCard shield"(this shield was made in JPN) hit "F5" key to start debug.
But VS2010 just say, "The debugging target is not an initialized state;rebooting".
So I Stopped debuging. And I plugged USB cable after unplugged my netduino,but There's no changes.VS2010 just say rebooting. :-p
So give me any advice?