If you've installed/configured sane a few times, you may have multiple files. You can check by typing:
Code:
find /usr /etc -name dll.conf -print
Make sure you only have one dll.conf file in any sane.d directory found. For example, the result of that command on my system brings up
Code:
/usr/local/etc/sane.d/dll.conf
/etc/sane.d/dll.conf
so I don't have a problem (one file for each dir)
I'm using the /etc/sane.d conf, so every backend in /usr/local/etc/sane.d is read-only (disabled).
You should only have one executable backend in your active sane.d directory - all others should be read-only