I have a Kodak P811 scanner which has been working fine scanning slide film photos. However, for some reason, it has stopped scanning the photo to the PC. Everything appears to function as it did (i.e., the film strip runs thru nicely) but nothing is transferred to the PC. I have tried calibrating/dusting and transferring to card rather than PC, all to no avail. I even tried scanning previously successfully scanned film which also did not work. Any thoughts please?