FULL PRODUCT VERSION :
JDK 6_20

ADDITIONAL OS VERSION INFORMATION :
Windows XP Latest Service Pack

EXTRA RELEVANT SYSTEM CONFIGURATION :
Running in Net beans 2.8

A DESCRIPTION OF THE PROBLEM :
This snip-it of code will generate within 13 tries the following error.

    private void File1CMSActionPerformed(java.awt.event.ActionEvent evt) {
        int result;
        File Inputfile;
        boolean GoodFile = false;
        JFileChooser fcFC1 = new JFileChooser();
        FileSystemView view = fcFC1.getFileSystemView();
        fcFC1.setDialogTitle("CMS File Open");
        fcFC1.setCurrentDirectory(view.getDefaultDirectory());
        fcFC1.setFileSelectionMode(JFileChooser.FILES_ONLY);

        result = fcFC1.showOpenDialog(this);
 


run:
Exception in thread "Basic L&F File Loading Thread" java.lang.NullPointerException
        at sun.awt.shell.Win32ShellFolder2.pidlsEqual(Win32ShellFolder2.java:498)
        at sun.awt.shell.Win32ShellFolder2.equals(Win32ShellFolder2.java:491)
        at sun.awt.shell.Win32ShellFolderManager2.isFileSystemRoot(Win32ShellFolderManager2.java:350)
        at sun.awt.shell.ShellFolder.isFileSystemRoot(ShellFolder.java:242)
        at javax.swing.filechooser.FileSystemView.isFileSystemRoot(FileSystemView.java:323)
        at javax.swing.filechooser.WindowsFileSystemView.isTraversable(FileSystemView.java:657)
        at javax.swing.JFileChooser.isTraversable(JFileChooser.java:1561)
        at javax.swing.plaf.basic.BasicDirectoryModel$LoadFilesThread.run0(BasicDirectoryModel.java:232)
        at javax.swing.plaf.basic.BasicDirectoryModel$LoadFilesThread.run(BasicDirectoryModel.java:211)


If can not be caught.


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
place the snip-it in a standard java package in Netbeans 6.8. Call from a menu item. Will occur within 13 tries. Dialog box still shows up.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
No error just the dialog box showing up.
ACTUAL -
as described.

ERROR MESSAGES/STACK TRACES THAT OCCUR :
Exception in thread "Basic L&F File Loading Thread" java.lang.NullPointerException
        at sun.awt.shell.Win32ShellFolder2.pidlsEqual(Win32ShellFolder2.java:498)
        at sun.awt.shell.Win32ShellFolder2.equals(Win32ShellFolder2.java:491)
        at sun.awt.shell.Win32ShellFolderManager2.isFileSystemRoot(Win32ShellFolderManager2.java:350)
        at sun.awt.shell.ShellFolder.isFileSystemRoot(ShellFolder.java:242)
        at javax.swing.filechooser.FileSystemView.isFileSystemRoot(FileSystemView.java:323)
        at javax.swing.filechooser.WindowsFileSystemView.isTraversable(FileSystemView.java:657)
        at javax.swing.JFileChooser.isTraversable(JFileChooser.java:1561)
        at javax.swing.plaf.basic.BasicDirectoryModel$LoadFilesThread.run0(BasicDirectoryModel.java:232)
        at javax.swing.plaf.basic.BasicDirectoryModel$LoadFilesThread.run(BasicDirectoryModel.java:211)

REPRODUCIBILITY :
This bug can be reproduced often.

---------- BEGIN SOURCE ----------
    private void File1CMSActionPerformed(java.awt.event.ActionEvent evt) {
        int result;
        File Inputfile;
        boolean GoodFile = false;
        JFileChooser fcFC1 = new JFileChooser();
        FileSystemView view = fcFC1.getFileSystemView();
        fcFC1.setDialogTitle("CMS File Open");
        fcFC1.setCurrentDirectory(view.getDefaultDirectory());
        fcFC1.setFileSelectionMode(JFileChooser.FILES_ONLY);

        result = fcFC1.showOpenDialog(this);
}
---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
Just ignore. But I do not know what else it is saying or covering up.