When I try to print photos from a memory stick it

The problem is that the metal paper stop is not fully recessing into the guide at the rear of the printer and the photo paper is catching on the lip on top of the stop. Take the back cover off the printer and check that the guide has not moved out of position. Also try to twist the photo paper tray to the left or right so the stop lines up better with the guide recess. This worked for my printer tempoarily, but then things went out of allignment again, so I took a slightly more drastic step. With only a single sheet of photo paper in the tray, print another photo. When the photo tray slides back to deliver the paper to the rollers, unplug the power cord from the rear of the printer to stop the tray from moving forward again. With a pair of needlenose pliers, bend the lip on top of the metal paper stop upward. This fixed my problem permanently.