QTR-Quadtone RIP

I actually do have some computer background but this problem has me
stumped. I have been using an Epson R800 for a while with Epson color
inks and Photoshop and everything works fine. I am running a fairly
current PC with large hard drives and lots of memory. I purchased and
installed a set of Piezography Neutral K7 inks and downloaded and
installed the latest Quad Tone RIP software. I ran the profile
generator and printed out the grey zone bars which looked great for a
first time test. I took a photo file and edited it changing it to a
B&W image and then saved it as a TIFF file so I could open it in
QuadtoneRIP. I cannot get it to print at all. The printer goes through
the motions moving the paper through the printer and the print heads
move back and forth as if it were printing but I don't get an image.
It has got to be some simple thing but I cannot figure it out. Any
suggestions?