My wife uses an Epson Picturemate 500 for printing. Recently I put three jpeg on a CF card, one from a coolpix 5100 and two saved as jpegs in elements 7from CR2 files from a 7d. The printer can only "see" the coolpix file, showing only one file on the card. Deleting that file shows none. Why can't the card reader on the printer "see" the two jpegs "made" by elements?