I don't think this is a GTK version issue.  It works on Solaris 9 using the same GTK
libraries (2.14.4) but does not work on our Solaris 10 hosts.  I'm still trying to figure
out why.  If you have any ideas, let me know.  Could be due to an environment variable,
different version of some library (but *not* the GTK libraries, since the same ones
are being used on both platforms) or on some package that is installed on one
OS but not on the other.