Digital BW, The Print

Ok, I had no problem getting a qtr/pc setup to send files for print to
my epson 4000.  PC blew up so I'm using a G4 laptop.  I've got qtr,
the correct print driver, and my curves installed.  I get everything
set in the qtr gui.  When I press print, it looks likes all's well but
then nothing prints.

Any explanation?

thanks
-John