private void Reload_Click(object sender, RoutedEventArgs e)
 {
     try
     {
         _script.Unload();
         _package.Compile();
         _script = _session.CreateScript("merged", _package.ScriptContent);
         _script.Message += Script_Message;
         _script.Load();
     }
     catch (Exception ex)
     {
         Trace.WriteLine(ex.Message);
         Messages.Add(ScriptMessage.CreateError(ex.Message));
         ScrollViewDown();
     }
 }