Well, Gnucleus is working again. I just got bored and tried clicking the icon one more time. Now it works.

Only thing I can figure is maybe I have to give my poor, tired Pentium a little longer to sort out its thoughts after I log-in to my ISP before I try starting Gnucleus.

Anyway, as Emily Litella says, "Nevermind!"
:-)

[PS: GNUCLEUS ROCKS!]