Posted by hharrison on May 30, 2012; 6:37pm
URL: https://forum.jogamp.org/NoClassDefFoundError-GLCapabilitiesChooser-on-OS-X-Snow-Leopard-and-Java-1-6-tp4008344p4023126.html

That's your problem then, the 'latest' java3d you downloaded _does not support JOGL2_

I've released some jar files from a forked version of Java3d that removes all the native backends
and ports the jogl backend to support JOGL2...you can find them here:

https://github.com/hharrison/java3d-core
https://github.com/hharrison/java3d-utils
https://github.com/hharrison/vecmath

Under Downloads in each repo there is a prebuilt jar file....good luck!

Harvey