Is there even any such file as libjogl.jnilib? Looking at the most recent autobuild (at
http://jogamp.org/deployment/autobuilds/master/jogl-b744-2012-04-27_06-26-41/), there is only libjogl_desktop.jnilib and libjogl_mobile.jnilib (which matches what I get when I build JOGL myself on OS X).
Maybe you're using an old version of the JNLPAppletLauncher from JOGL 1.1.1? I notice your JNLP refers to platforms we don't support anymore :) It might be instructive to turn on debugging output from JNLPAppletLauncher and see what it's doing.