[GRASSLIST:90] nviz: error while loading shared libraries: libtk.so.0

[Greg Sepesi]

I'm using RedHat Linux 9, bash and GRASS 5.0.2.  When I attempt to run 

	GRASS:~ > nviz

the result is "/usr/local/grass5/etc/nviz2.2/NVWISH2.2: error while
loading shared libraries: libtk.so.0 cannot open shared object file: No
such file or directory"

As suggested on the GRASS installation web page, I've tried making a
link from libtk.so to libtk.so.0 by running

	ln -s libtk.so libtk.so.0

And running 

	GRASS:~ > slocate libtk.so.0

results in "~/ActiveTcl/lib/libtk.so.0".  However I still get the same
"No such file or directory" error when I try to run nviz.

As I am new to GRASS and very rusty (> 5 years) at any variant of Unix,
tips to help find this apparent environment variable problem would be
appreciated.

Regards,
Greg