Yahoo Feed

The error message that caused the product images not to show up on yahoo's product feed was "Include a valid image for these product(s) by populating the "image-url" field". After I fixed the retail price to display double zeros for round number prices (9.00 instead of 9), then the images were picked up. Apparently an invalid image is a euphemism for something completely different. A couple of the products are still not showing images, but I'm giving up here and calling it good. Is accepting XML instead of tab delimited plain text too much to ask?