Why JFileChooser doesn´t show when using JWS?

Question

I have this code where a JFileChooser is shown and the user must choose a directory where JasperReport must be exported to Excel.
Everything works fine when running locally (the jar file) but when I put in the server and my client runs it using JWS the JFileChooser dialog doesnt show up.
I am aware that the JNLP must have all-permissions, and it is but still does not show the diago to select the directory. And worse, no exceptions are shown else well.
final JFileChooser fc = new JFileChooser();
int choice = 0;
try {
     fc.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
     System.out.println("1"); // DOES NOT REACH THIS LINE
     fc.setDialogTitle("Select Directory to Export");
     System.out.println("2");
     fc.setApproveButtonText("Select");
     System.out.println("3");
     fc.setMultiSelectionEnabled(false);
     System.out.println("4");
     fc.setCurrentDirectory(new File("C:/Kooky/SigGraf"));
     System.out.println("5");
     choice = fc.showOpenDialog(frame);
     System.out.println("6");
} catch (Exception ex) {
     ex.printStackTrace();
if (choice == JFileChooser.APPROVE_OPTION) {
     Thread worker = new Thread() {
          @Override
          public void run() {
               String msg = "";
               try {
                    File dir = fc.getSelectedFile();
                    String local = dir.getPath();
                    msg = Report.exportarParaExcel(startDate, endDate, local);
               } catch (Exception ex) {
                    ex.printStackTrace();
               final String msg2 = msg;
               SwingUtilities.invokeLater(new Runnable() {
                    public void run() {
                         JOptionPane.showMessageDialog(frame, msg2);
     worker.start();
} else {
     JOptionPane.showMessageDialog(frame, "You did not select a directory to export the report.");
}The JNLP file:
     <security>
          <all-permissions/>
     </security>
All the jars are signed with the same certificate.

Answer 1

FranzAnthony wrote:
Amazing your answer, you asked for exactly what I posted, thanks a lot for your help, let it be.Please read the SSCCE link again, as it isn't "exactly" what you posted. It's so much easier to answer questions when a nice compilable and runnable example has been provided by the OP. You are not required to do this of course, but if you do provide one, the odds of getting a quick helpful answer will be greatly increased.
Or you can post a snarky comment and antagonize all the rest of the forum regulars who otherwise would have helped you. Your call.