private void checkUpdatesButt_Click(object sender, EventArgs e)
 {
     if (File.Exists(cwd + "\\OldLauncher.exe"))
     {
         File.Delete(cwd + "\\OldLauncher.exe");
     }
     if (File.Exists(cwd + "\\OldLauncherConfig.xml"))
     {
         File.Delete(cwd + "\\OldLauncherConfig.xml");
     }
     if (File.Exists(cwd + "\\OldLauncherIcon.ico"))
     {
         File.Delete(cwd + "\\OldLauncherIcon.ico");
     }
     progressLabel.Text  = "";
     speedLabel.Text     = "";
     percentLabel.Text   = "";
     totalSizeLabel.Text = "";
     o.Reset();
     optionalsListView.Clear();
     handler = new FileHandler();
     handler.optionalsListView = optionalsListView;
     updateButt.Enabled        = false;
     launchButt.Enabled        = false;
     if (handler.IsInWowDir())
     {
         if (!c.isDefaultConfigUsed)
         {
             if (handler.CheckForUpdates())
             {
                 updateButt.Enabled = true;
                 UpdateOptionalSizeLabel();
             }
         }
         // Outputs for debugging purpouses. Keep them commented in releases.
         // handler.OutputServerFilelist();
         // handler.OutputOptionalGroups();
     }
     else
     {
         o.Messagebox(c.SubElText("Messages", "LauncherNotInWowDir"));
     }
 }