I posted a topic about it. The shared library is in the wrong place, just put on the right one:
sudo mv /usr/lib/sane/libsane-smfp.so* /usr/lib/x86_64-linux-gnu/sane/
Scan nice things and have an awesome life. (:
sudo mv /usr/lib/sane/libsane-smfp.so* /usr/lib/x86_64-linux-gnu/sane/
Scan nice things and have an awesome life. (: