Well, after adding the HUD, I do this:
probeTransform = new Transform3D(0f, 4f, 0f);
probe2TG = new TransformGroup( probeTransform );
objects1bg.addChild(probe2TG);
objects1bg.addChild(exodusModel.load("base", this.getAnimator()));
probe2TG.addChild(exodusModel.load(probe.getModelName(),
this.getAnimator()));
then I add the fogs and lights, and finally i add the BranchGroups to the environment. Actually, that brings me to something else. I just updated, and I found that the addBranchGraph() method how requires a RenderPassConfig argument. What should I pass to it?