The following exception occures when launching JavaFibs 2001 with the newest Java 1.5 beta (on Windows):

Exception in thread "main" java.lang.NullPointerException
   at javax.swing.ImageIcon.<init>(Unknown Source)
   at javax.swing.ImageIcon.<init>(Unknown Source)
   at sun.swing.WindowsPlacesBar.<init>(Unknown Source)
   at com.sun.java.swing.plaf.windows.WindowsFileChoose rUI.updateUseShellFolder(Unknown Source)
   at com.sun.java.swing.plaf.windows.WindowsFileChoose rUI.installComponents(Unknown Source)
   at javax.swing.plaf.basic.BasicFileChooserUI.install UI(Unknown Source)
   at com.sun.java.swing.plaf.windows.WindowsFileChoose rUI.installUI(Unknown Source)
   at javax.swing.JComponent.setUI(Unknown Source)
   at javax.swing.JFileChooser.updateUI(Unknown Source)
   at javax.swing.JFileChooser.setup(Unknown Source)
   at javax.swing.JFileChooser.<init>(Unknown Source)
   at javax.swing.JFileChooser.<init>(Unknown Source)
   at cd.<init>(cd.java)
   at z.J(z.java)
   at z.<init>(z.java)
   at JavaFIBS2001.main(JavaFIBS2001.java)

The JVM is Java™ 2 Runtime Environment, Standard Edition (build 1.5.0-beta2-b51)
Java HotSpot™ Client VM (build 1.5.0-beta2-b51, mixed mode)

Has anyone successfully launched JavaFIBS with this latest JVM? This is really too bad, since 1.5 seems to be quite a bit faster and not so memory intensive than the previous versions.

I have yet to see a beta JRE that fully works with JavaFIBS. They simply refuse. All of them. Always. It's probably just a waste of time trying until the final version comes out.
 

From a brief look at the exception it seems there's something about the look-and-feel that goes nuts. Something I don't have any control of.  So, yes, I'm sure. This kind of error has happened with every beta version that has come out, but still worked beutifully with the final release. I expect the same thing to happen this time.