Hi, I am a long time reader/viewer of Luminous-Landscape, and have been most appreciative of the valued information found at this site. I recently purchased the epson 4800 and the imageprint rip and am using the phatteblack inks. I have been printing beautifully for over a month now on 8.5x11 paper, and decided that now was the time to try a large print on 17x22 epson ultra smooth fine art paper. I was able to get the large cut sheet into the printer and all seemed well, until I got the message to put paper into the paper tray, (with red light blinking). Obviously there was already paper in the printer, so why is the message showing up? I had used the "user defined" choice in imageprint for the size of the paper, and I put in 17"x22". I know its probably something very simple, but I haven't been able to figure it out. Thanks for any help.