problem compiling visad

Dear visad users, 

I'm compiling visad  on a redhat 9 linux platform and
I have a lot of unresolved symbol errors like: cannot resolve symbol
symbol  : class UnimplementedException
location: class visad.java3d.ShadowTupleTypeJ3D
        throw new UnimplementedException("terminal
LEGAL unimplemented: " +

even though I have the java3d libraries:  
under the dir: 

which I have setenv CLASSPATH to already. 

Am I still missing some .so libraries in J3d?

Much appreciated for your help!