I have MASON running under netbeans 6.0.1.  I get the following errors
when I run any of the 3d simulations:

run:
java.lang.UnsatisfiedLinkError: no j3dcore-ogl in java.library.path
        at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1682)
        at java.lang.Runtime.loadLibrary0(Runtime.java:823)
        at java.lang.System.loadLibrary(System.java:1030)
        at javax.media.j3d.NativePipeline$1.run(NativePipeline.java:231)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.media.j3d.NativePipeline.loadLibrary(NativePipeline.java:200)
        at javax.media.j3d.NativePipeline.loadLibraries(NativePipeline.java:157)
        at javax.media.j3d.MasterControl.loadLibraries(MasterControl.java:987)
        at javax.media.j3d.VirtualUniverse.<clinit>(VirtualUniverse.java:299)
        at javax.media.j3d.GroupRetained.<init>(GroupRetained.java:161)
        at javax.media.j3d.TransformGroupRetained.<init>(TransformGroupRetained.java:121)
        at javax.media.j3d.TransformGroup.createRetained(TransformGroup.java:119)
        at javax.media.j3d.SceneGraphObject.<init>(SceneGraphObject.java:119)
        at javax.media.j3d.Node.<init>(Node.java:178)
        at javax.media.j3d.Group.<init>(Group.java:556)
        at javax.media.j3d.TransformGroup.<init>(TransformGroup.java:92)
        at sim.display3d.Display3D.<init>(Display3D.java:1130)
        at sim.app.heatbugs3d.HeatBugs3DWithUI.init(HeatBugs3DWithUI.java:153)
        at sim.display.Console.<init>(Console.java:981)
        at sim.display.Console.doNew(Console.java:1728)
        at sim.display.Console.main(Console.java:1424)

The 3d libraries are associated with the project and the .so files are
in the ldconfig cache:

% ldconfig -p | grep j3d
        libj3dcore-ogl.so (libc6) => /usr/local/lib/libj3dcore-ogl.so
        libj3dcore-ogl-cg.so (libc6) => /usr/local/lib/libj3dcore-ogl-cg.so

All the other MASON simulations appear to run fine.  Again, only the
3D related simulations fail with the above error.

Cheers,

Mark