QTR-Quadtone RIP

Attempting to print to a R2400 on a MacBookPro. Photoshop and Lightroom both produce the following error stream:


-----(extract from /var/log/cups/error.log)------
I [05/Oct/2007:19:02:51 -0400] Adding start banner page "none" to job 441.
I [05/Oct/2007:19:02:51 -0400] Job 441 queued on "QuadR2400" by "carlmuckenhirn".
I [05/Oct/2007:19:02:51 -0400] Started filter /usr/libexec/cups/filter/cgpdftoraster (PID 1834) for job 441.
I [05/Oct/2007:19:02:51 -0400] Started filter /usr/libexec/cups/filter/quadtoneprint (PID 1835) for job 441.
I [05/Oct/2007:19:02:51 -0400] Started backend /usr/libexec/cups/backend/usb (PID 1836) for job 441.
N [05/Oct/2007:19:02:51 -0400] [Job 441] QuadToneRIP: using curve UCmk-EEnhMatte-neut
N [05/Oct/2007:19:02:51 -0400] [Job 441] QuadToneRIP: using curve UCmk-EEnhMatte-warm
E [05/Oct/2007:19:02:51 -0400] [Job 441] QuadToneRIP: curve  does not exist.
N [05/Oct/2007:19:02:51 -0400] [Job 441] QTR using curve file UCmk-EEnhMatte-neut
N [05/Oct/2007:19:02:51 -0400] [Job 441] QTR using curve file UCmk-EEnhMatte-warm
N [05/Oct/2007:19:02:51 -0400] [Job 441] QTR using curve file UCmk-EEnhMatte-sepia
E [05/Oct/2007:19:02:51 -0400] [Job 441] No pages found!
E [05/Oct/2007:19:02:51 -0400] PID 1835 (/usr/libexec/cups/filter/quadtoneprint) stopped with status 1!

Using cups 1.2.12. Printer works fine with Epson Driver. I'd like to try QTR out, but can't get anything out.

carl.