Comment 4 for bug 1533780

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Emmanuel JL (ejl-o) wrote :

"sudo apt-get install --reinstall libsane:i386"

Did not fix for me on 16.04. Received same error in terminal after running

Unpacking libsane:i386 (1.0.25+git20150528-1ubuntu2) ...
dpkg: error processing archive /var/cache/apt/archives/libsane_1.0.25+git20150528-1ubuntu2_i386.deb (--unpack):
 trying to overwrite shared '/lib/udev/rules.d/40-libsane.rules', which is different from other instances of package libsane:i386
Errors were encountered while processing:
 /var/cache/apt/archives/libsane_1.0.25+git20150528-1ubuntu2_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)