Coping the content of /usr/lib64/sane/ to /usr/lib/x86_64-linux-gnu/sane works fine for me and my Epson XP-312.
I've tested the procedure on a clean install an also on my production machine.
After installing libsane1 1.0.27-1~experimental2ubuntu2.1, sane-utils_1.0.27-1~experimental2ubuntu2.1and libsane-common_1.0.27-1~experimental2ubuntu2.1 I runned ISCAN install via standard Epson script with no issue.
Then i copied the files /usr/lib64/sane/ to /usr/lib/x86_64-linux-gnu/saneand modified dll.conf and Epkowa.conf in /etc/sane.d (as I've ever done for my LAN connected scanner).
Now I can run ISCAN as user with no problem and simple-scan works too.
Coping the content of /usr/lib64/sane/ to /usr/lib/ x86_64- linux-gnu/ sane works fine for me and my Epson XP-312. 1~experimental2 ubuntu2. 1, sane-utils_ 1.0.27- 1~experimental2 ubuntu2. 1and libsane- common_ 1.0.27- 1~experimental2 ubuntu2. 1 I runned ISCAN install via standard Epson script with no issue. x86_64- linux-gnu/ saneand modified dll.conf and Epkowa.conf in /etc/sane.d (as I've ever done for my LAN connected scanner).
I've tested the procedure on a clean install an also on my production machine.
After installing libsane1 1.0.27-
Then i copied the files /usr/lib64/sane/ to /usr/lib/
Now I can run ISCAN as user with no problem and simple-scan works too.