This looks like a transient problem, caused maybe by a corrupted package or database. There's no bug to be fixed in checkbox itself, as the change introduced in 0.15.6 is minimal and unlikely to have caused this problem.
I found an answer with possible solutions to the problem: https://answers.launchpad.net/ubuntu/+source/update- manager/+question/166843 I'll paste the content here to provide a complete solution: If you haven't already, first try updating in the Update Manager again. It might work the second time. If it doesn't work, then please quit the Update Manager (and any other graphical package management programs, such as the Software Center and the Synaptic Package Manager), open a Terminal window (Ctrl+Alt+T) and run the following commands. You should wait until each command completes before running the next one. If you see something that looks like an error, I recommend stopping and posting all the text from the Terminal (Edit > Select All; Edit > Copy) here. sudo apt-get update sudo apt-get -y upgrade sudo apt-get dist-upgrade Then see if the problem is fixed. If the problem is not fixed, run: sudo dpkg --configure -a See if that fixes it. If the problem is still not fixed run these two commands: sudo rm /var/cache/apt/archives/`dpkg-query -f='${Package}_${Version}_${Architecture}' -W tzdata`.deb sudo apt-get --purge --reinstall install tzdata If *that* doesn't fix it, then please follow this procedure in fully from Step 1 to Step 4: https://help.ubuntu.com/community/PackageManagerTroubleshootingProcedure If the problem is still not fixed, then please select all the text in the Terminal (Edit > Select All), copy it to the clipboard (Edit > Copy), and paste it here. Please note that you should make sure to completely quit out of the Update Manager before running any of the commands listed above; they might not be able to perform their intended functions if run while the Update Manager (or other graphical package management utilities) is running. Let me know if any of these steps solves your problem. ** Changed in: checkbox (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1193713 Title: package checkbox-qt 0.15.6 failed to install/upgrade: subprocess installed post-installation script returned error exit status 128 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/checkbox/+bug/1193713/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
