well, after unsuccessful dpkg-reconfigure -a, apt-get dist-upgrade, etc. sudo apt-get install ubiquity-frontend-gtk
managed to get my dependencies and package configuration right... (hopefully, not yet rebooted). So, this seems a bug actually affecting the installation/upgrade scripts or the above package. I changed the python3-defaults autogenerated by apport to the ubiquity thing, hence. ** Package changed: python3-defaults (Ubuntu) => ubiquity (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1244198 Title: package python3 3.3.2-14ubuntu1 failed to install/upgrade: ErrorMessage: subprocess installed post-installation script returned error exit status 4 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1244198/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs