When I try to run Doug Gehringer's fine Volume rendering code using appletviewer the appletviewer halts with "Start: applet not started" at the bottom of the pane. The terminal window from which I execute appletviewer shows the following: rudist-46> appletviewer -debug VolRend.html Warning: disabling security due to current limitations in debugger. Initializing jdb... 0xc4:class(sun.applet.AppletViewer) > run run sun.applet.AppletViewer -nosecurity VolRend.html running ... main[1] Warning: SecurityManager not installed! Current thread "main" died. Execution continuing... > load: VolRend.class can't be instantiated. java.lang.InstantiationException: VolRend at java.lang.Class.newInstance0(Native Method) at java.lang.Class.newInstance(Class.java:240) at sun.applet.AppletPanel.createApplet(AppletPanel.java:532) at sun.applet.AppletPanel.runLoader(AppletPanel.java:468) at sun.applet.AppletPanel.run(AppletPanel.java:302) at java.lang.Thread.run(Thread.java:485) sun.applet.AppletViewer exited VolRend.html is in the same directory as the rest of the classes. I am using this code to display an earth model of size 64x64x27 and it runs successfully as an application. All of this is using the latest jdk1.2 release under Sunos 5.7 on Ultra10 with 1Gig memory. the java -version returns java version "1.2.1" Solaris VM (build Solaris_JDK_1.2.1_03, native threads, sunwjit) Does there have to be an init(); method for the appletviewer to start with? Cheers, LeRoy M. Dorman Scripps Institution of Oceanography, 0215 University of California, San Diego La Jolla, CA 92093-0215 voice: +1 858 534-2406 fax: +1 858 534-6849 inet: [EMAIL PROTECTED] http://www-mpl.ucsd.edu/cg/people/ldorman.html Physical address: 3226 Ritter Hall 8635 Discovery Way La Jolla, CA 92037 =========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA3D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".