DMULLINS Hey MIKE, I've been scouring the web all morning trying to get my old CanoScan LiDE 50 scanner to work again, and I think I've found a Universal solution at-last, and I think it's a lot simpler than anyone might have imagined. What I've found is that it's a simple naming error in the software/driver installers.
Visit my blog to view my post about how to fix the issue!
http://blog.dylanmullins.com/?p=254
Stop by and see if it corrects the problem for you as well, and if the solution worked for you please leave a comment and let me know.