QTR-Quadtone RIP

I have recently downloaded the QTR v2.4.3.10 and installed it, but
can't get it to print on both sides of the paper.  Consistently, no
matter what orientation, print resolution or paper/blend combination I
use, the print is entirely black on the right 1/2 of the page,
followed by about a 1" space of black/white banding, lines running
vertical down the page (length-wise on portrait, width-wise on
landscape) with the photo distorted and squeezed onto the left-most
1/3 of the printed space.

What is up?  I've tried all I know, with no avail.

I am using Windows XP/Photoshop CS2 to prepare photos, saved in tif.
Printer is the Epson R1800.

Thanks for your help.