Getting a Canon LiDE 200 to work
I had the same error as the original poster, which led me here.
The 40-libsane.rules file and the sane compatibility list suggested it should "just work", so I tinkered a bit and found that if you change the setting in Simple Scan preferences called Scan Side and set it to Back (rather than the default Front and Back), all is good.
First I followed the recommendations:
sudo add-apt-repository ppa:robert-ancell/sane-backends
sudo apt-get update
sudo apt-get install libsane libsane-extras sane-utils
Then I installed xsane and finally my Canoscan Lide 200 started to work.