I've already wasted a day's wages in ink trying to print a photo from Lightroom onto 4x6 photo paper, but having them come out on plain 8.5x11. Nowhere in the "Page Setup" or "Printer Settings" or "Printer" dialog boxes in Lightroom does it give me the option to choose the photo tray instead of the main tray. I can choose the size of the paper, but it still reverts to the main tray. And yes, I have tried taking out the 8.5x11 paper, but it still won't print from the photo tray (it just tells me to reload paper in the machine). Anyone have a solution?