Continue to get this error. Printing documents to A4 in lower tray works fine.Printing photos to Canon photo 4x6 paper in upper tray and I get this message. Please help. I thought I had a reliable printer at last!Thank you
Further info:Taking the tray out and looking inside reveals that the print takes a piece of paper about half way and then gives up with the error 1007 No paper in cassette (upper).Has a sensor failed? Please help me to determine so I can clean/replac...
