Thank you, it worked perfectly.
I have another problem printing on 12x12 paper on the 7880.
It won't allow me to leave just a small boarder around a 12x12 image in order to frame almost to the edge of the print.
I can do this with my 3880 just by shrinking the print size from 100% to 98.5% (in the printer dialogue box).
No such luck with the 7880, it forces an approximately 1/2" boarder at the bottom edge, thus cutting off part of the image.
I've tried to "trick" it into thinking it has a custom paper size of 12x13, but still chooses the same bottom boarder. I'm guessing that that's what it allows for gripping the paper.
Is there no way around this?
The reason I don't just use the 3880 is that I keep it running with PK and the 7880 using MK.