Applet gets unknown error

URL: file:/home/vanvleck/www/gpw.html), see file:/home/vanvleck/www/Gpw.java

Clicking on "password generator" conks HotJava out.
Works fine in Netscape 3.01.

(JDK: JDK1.1.1A),
java.lang.UnknownError: GlobeView
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java)
        at GlobeApplet.<init>(GlobeApplet.java:6314)
        at sun.applet.AppletPanel.runLoader(AppletPanel.java:412)
        at sun.applet.AppletPanel.run(AppletPanel.java:223)
        at sun.hotjava.tags.TagAppletPanel.run(TagAppletPanel.java:190)
        at java.lang.Thread.run(Thread.java)