Comment 2 for bug 971889

Here's an install log on a system with only checkbox and checkbox-qt (version 0.13.5) installed.

I'm installing checkbox-gtk and checkbox-cli additionally. These get added without errors, and both checkbox and checkbox-qt install correctly.

$ dpkg --list 'checkbox*'
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Description
+++-==============-==============-============================================
ii checkbox 0.13.5 System testing application
un checkbox-cli <none> (no description available)
un checkbox-gtk <none> (no description available)
ii checkbox-qt 0.13.5 QT4 interface for checkbox
un checkbox-urwid <none> (no description available)

$ sudo dpkg --install checkbox{,-cli,-gtk,-qt}*deb
(Reading database ... 127469 files and directories currently installed.)
Preparing to replace checkbox 0.13.5 (using checkbox_0.13.6_i386.deb) ...
Unpacking replacement checkbox ...
Selecting previously unselected package checkbox-cli.
Unpacking checkbox-cli (from checkbox-cli_0.13.6_all.deb) ...
Selecting previously unselected package checkbox-gtk.
Unpacking checkbox-gtk (from checkbox-gtk_0.13.6_all.deb) ...
Preparing to replace checkbox-qt 0.13.5 (using checkbox-qt_0.13.6_i386.deb) ...
Unpacking replacement checkbox-qt ...
Selecting previously unselected package checkbox-urwid.
Unpacking checkbox-urwid (from checkbox-urwid_0.13.6_all.deb) ...
Preparing to replace checkbox-cli 0.13.6 (using checkbox-cli_0.13.6_all.deb) ...
Unpacking replacement checkbox-cli ...
Preparing to replace checkbox-gtk 0.13.6 (using checkbox-gtk_0.13.6_all.deb) ...
Unpacking replacement checkbox-gtk ...
Preparing to replace checkbox-qt 0.13.6 (using checkbox-qt_0.13.6_i386.deb) ...
Unpacking replacement checkbox-qt ...
ore than one copy of package checkbox-cli has been unpacked
 in this run ! Only configuring it once.
ore than one copy of package checkbox-gtk has been unpacked
 in this run ! Only configuring it once.
ore than one copy of package checkbox-qt has been unpacked
 in this run ! Only configuring it once.
Setting up checkbox (0.13.6) ...
Processing triggers for man-db ...
Processing triggers for hicolor-icon-theme ...
Setting up checkbox-cli (0.13.6) ...
Setting up checkbox-gtk (0.13.6) ...
Setting up checkbox-qt (0.13.6) ...
Setting up checkbox-urwid (0.13.6) ...
Processing triggers for desktop-file-utils ...
Processing triggers for bamfdaemon ...
Rebuilding /usr/share/applications/bamf.index...
Processing triggers for gnome-menus ...
$