[ubuntu] Scan button does not work (PSC 1350 and Xsane)

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http://ubuntuforums.org – Xsane always comes up "scanning devices" when I call it up from Applications > Graphics. It then finds the HP PSC 1350 scanner (so far so good) and the PCTV Rave video card (not so good). When I press the scan button on the printer/scanner, nothing happens. I believe it to be because Xsane finds both devices and doesn't know what to do next. How can I test this theory and not have the video card seen by Xsane? And yes, I have checked the HP settings and "xsane -V %SANE_URI%" is in the right place. I do about 60 or 70 receipts in at a time, so it would be advantageous. Thank you in advance.... And if nobody answers before next week, Merry Christmas anyway. P.S. Have I put this thread in the right Forum? (Hardware)