QTR-Quadtone RIP

For some time I have happily used QTR on my Epson 2200.  It developed 
severe paper handling problems and Epson replaced it with a refurbished 
printer under warranty.  The "new" printer seems to work fine -- as 
long as I use Epson's driver.  When I use QTR, which worked happily 
with my previous printer, nothing happens, and when I call up the 
"Quadtone RIP" icon from the dock, it says "Printer not responding."  
Can anyone help?

Alan