A little problem with the "while". I susspect it. Maybe you can resolve it.

{
string path = Application.StartupPath;
string tt = "";
List<string> e34 = new List<string>();

private void Form1_Load(object sender, EventArgs e)
        {
            sr = new StreamReader(path + "\\mission.scn");
            tt = sr.ReadToEnd(); sr.Close();

            StringSyndicate ss = new StringSyndicate(tt);
            while (!ss.EndOfString) //when is near the EndOfString (one integer left to the end)
            {
                ss.ReadLine();     //it perform this line who increment a private int with 1 = the actual EndOfString (go down and see)
		....
	    }
	label.Text = "[" + e34.Count.ToString() + "]"; //this line is never reach - What is the problem?(I suspect the "while")...

        }
}


 public class StringSyndicate
    {
        public StringSyndicate(string text)
        {
            originaltext = text;
            using (StringReader reader = new StringReader(originaltext))
            {
                string miline;
                while ((miline = reader.ReadLine()) != null)
                {
                    txtlines.Add(miline);
                }
            }
        }
        private static string originaltext = "", newLine = "";
        List<string> txtlines = new List<string>();
        StringReader sr = new StringReader(originaltext);
        int c = -1;



        public string ReadToEnd()
        {
            return originaltext;
        }

        public int LinesInt
        {
            get
            {
                return txtlines.Count;
            }
        }
        public string LinesStr
        {
            get
            {
                return txtlines.Count.ToString();
            }
        }
        int savec = 0;
        public void PositionSave()
        {
            savec = c;
        }
        public void PositionLoad()
        {
            c = savec;
        }

        public string ReadLine()
        {
            c++;			//here it increment the last number
            return txtlines[c];		// but when it reach this line, the compiler do NOT  continue and exit. 
        }
        public string CurrentLine
        {
            get
            {
                return txtlines[c];
            }
        }

        bool endOfString = true;
        public bool EndOfString
        {
            get
            {
                int cnt = originaltext.Length;
                if (originaltext.EndsWith(""))
                {
                    endOfString = false;
                }
                return endOfString;
            }
        }
    }