Thanks for the response. Alas, after I posted, I mucked around with Gslapt and broke my system. Anyway, I have since reinstalled. It's probably a good thing too, since I now have /home in a separate partition (previously I didn't). Fortunately I didn't have much on the hard drive. I'll have to be more careful in the future.
Anyway, I tried out gscan2pdf 1.0.4-i586-3vl70 and it works perfect. So, thanks for the great work.