I used to be able to use phex, but now I just get a bunch of errors when I try to start it.

I am using phex_2.8.0.91 running on kubuntu linux 5.10, using the following java:


$ java -version
java version "1.4.2"
gij (GNU libgcj) version 4.0.2 20050808 (prerelease) (Ubuntu 4.0.1-4ubuntu9)


The error messages when I try to start phex are as follows:


$phex
java.awt.AWTError: Cannot load AWT toolkit: gnu.java.awt.peer.gtk.GtkToolkit
at java.awt.Toolkit.getDefaultToolkit() (/usr/lib/libgcj.so.6.0.0)
at java.awt.GraphicsEnvironment.getLocalGraphicsEnvir onment() (/usr/lib/libgcj.so.6.0.0)
at java.awt.Window.Window(java.awt.Window, java.awt.GraphicsConfiguration) (/usr/lib/libgcj.so.6.0.0)
at java.awt.Window.Window(java.awt.Frame) (/usr/lib/libgcj.so.6.0.0)
at javax.swing.JWindow.JWindow() (/usr/lib/libgcj.so.6.0.0)
at phex.gui.common.SplashWindow.SplashWindow() (Unknown Source)
at phex.Main.main(java.lang.String[]) (Unknown Source)
at gnu.java.lang.MainThread.call_main() (/usr/lib/libgcj.so.6.0.0)
at gnu.java.lang.MainThread.run() (/usr/lib/libgcj.so.6.0.0)
Caused by: java.lang.ClassNotFoundException: gnu.java.awt.peer.gtk.GtkToolkit not found in gnu.gcj.runtime.SystemClassLoader{urls=[file:/home/me/phex_2.8.0.91/phex.jar,file:./], parent=gnu.gcj.runtime.ExtensionClassLoader{urls=[], parent=null}}
at java.net.URLClassLoader.findClass(java.lang.String ) (/usr/lib/libgcj.so.6.0.0)
at java.lang.ClassLoader.loadClass(java.lang.String, boolean) (/usr/lib/libgcj.so.6.0.0)
at java.lang.ClassLoader.loadClass(java.lang.String) (/usr/lib/libgcj.so.6.0.0)
at java.lang.Class.forName(java.lang.String, boolean, java.lang.ClassLoader) (/usr/lib/libgcj.so.6.0.0)
at java.lang.Class.forName(java.lang.String) (/usr/lib/libgcj.so.6.0.0)
at java.awt.Toolkit.getDefaultToolkit() (/usr/lib/libgcj.so.6.0.0)
...8 more
$



Can someone tell me what I am doing wrong?