Problem with Font not detecting URL

[latitude]

Hi, have a bit of a weird problem. Have a text-editor and problem is that when i doubleclick to open a file from explorer, the font im using wont detect the url, but show it as plain text only. Seems that if i use the default mssans serif font it works fine, but not when im using another custom font. But it should work, atleast it detects the url fine when i use drag'ndrop and opening by filemenu filestream. Or if i first opens a file from explorer by doubleclicking it wont display the link properly untill i add or delete a word from the link, then it immediately shows it correctly!

Anyone have any idea what might be wrong?

[latitude]

Forget to insert the code used for opening the file, which is like this:

if(args.Length > 0)
{
Form1 frm = new Form1();
FileStream file = new FileStream(args[0], FileMode.Open, FileAccess.ReadWrite);
System.IO.StreamReader myFile = new System.IO.StreamReader(file, System.Text.Encoding.Default);
frm.TextBox.Text = myFile.ReadToEnd();
frm.Text =("Viewing " + args[0].ToString());
myFile.Close();
file.Close();
Application.Run(frm);