Comment 6 for bug 149106

I had the same error as the initial report.
However when trying to install the .deb by force, I get further errors, see below.
So that method won't work for all cases.

$ sudo dpkg -i --force-overwrite /var/cache/apt/archives/cupsys_1.3.2-1ubuntu4_i386.deb
(Reading database ... 162129 files and directories currently installed.)
Preparing to replace cupsys 1.3.2-1ubuntu1 (using .../cupsys_1.3.2-1ubuntu4_i386.deb) ...
Ignoring nonregistered document cupsys
 * Stopping Common Unix Printing System: cupsd [ OK ]
Unpacking replacement cupsys ...
dpkg - warning, overriding problem because --force enabled:
 trying to overwrite `/usr/share/doc/libcupsys2/CREDITS.txt', which is also in package libcupsys2
dpkg - warning, overriding problem because --force enabled:
 trying to overwrite `/usr/share/doc/libcupsys2/README.txt.gz', which is also in package libcupsys2
dpkg: dependency problems prevent configuration of cupsys:
 cupsys depends on libavahi-compat-libdnssd1 (>= 0.6.13); however:
  Package libavahi-compat-libdnssd1 is not configured yet.
 cupsys depends on libcupsimage2 (>= 1.3.0); however:
  Package libcupsimage2 is not configured yet.
 cupsys depends on libcupsys2 (>= 1.3.0); however:
  Package libcupsys2 is not configured yet.
 cupsys depends on cupsys-common; however:
  Package cupsys-common is not configured yet.
dpkg: error processing cupsys (--install):
 dependency problems - leaving unconfigured
Errors were encountered while processing:
 cupsys