Posted by Xerxes Rånby on Jun 01, 2015; 5:38am
URL: https://forum.jogamp.org/Return-of-the-java-lang-UnsatisfiedLinkError-Can-t-load-library-System-Library-Frameworks-gluegen-rt-tp4034549p4034550.html

Alexis Drogoul wrote

Recently, we moved the project to Eclipse Luna (4.3.2) and the good old exception "java.lang.UnsatisfiedLinkError: Can't load library: /System/Library/Frameworks/gluegen-rt.Framework/gluegen-rt"

One known reason to get this exception is if some application installer has decided to place JOGL jars (gluegen-rt.jar, jogl-all.jar ) in the /System/Library/Java/Extensions folder

JogAmp strongly recommend to never put any jars inside the java ext or extension folders.
If you find JOGL jars in the Extension folder, remove them.