Processing triggers for man-db (2.6.7.1-1ubuntu1) ...
/usr/bin/mandb: can't read from /var/cache/man/cs/index.db: Is a directory
Errors were encountered while processing:
 /var/cache/apt/archives/smbclient_2%3a4.3.8+dfsg-0ubuntu0.14.04.2_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)