Enabling Java2d.opengl on OS X?

Hi all,
Moderately skilled Java programmer here, new to jogl. I’m trying to get the jogl-demos “xtrans” example going on OS X 10.5.5. I have Apple’s JDK 1.6 installed, and can compile and build 1.6 apps through Eclipse. I can successfully build and execute most of the other jogl-demos, but xtrans errors after finding Java2D.isOGLPipelineActive() returns false. I’m using 1.6, and have tried both passing -Dsun.java2d.opengl=true in the Eclipse Run Configuration’s JVM arguments field, and the Run Configuration’s System Variables page (variable name: sun.java2d.opengl, value:true)… in either case, Java2D.isOGLPipelineActive() returns false. Can anyone indicate what I’m missing here? Is this pipeline just DOA in the Apple JVM?