Hi---I have a older mac with an epson stylus pro ink jet printer. When printing in the CMYK mode (I get there by going into "page setup" and then "options" for the printer setup), what happens is the CMY print beautifully but the K prints with horizontal lines of missing ink thru the K type areas. Also if I print a 4c photo-the K will not print and only the CMY print. The printer has ink. When the page set up is changed to "monochrome", there is no problems and the K will print correctly without any of the above mentioned problems. Thus I think it may be some kind of a software? problem. HELP - I need to print some stuff in CMYK!