>From looking at your TerminalLog, it appears that your problem is python, not update-manager.
These lines appear each time a package is to be installed: Traceback (most recent call last): File "/usr/bin/pycentral", line 1593, in <module> main() File "/usr/bin/pycentral", line 1587, in main rv = action.run(global_options) File "/usr/bin/pycentral", line 1075, in run requested = pyversions.requested_versions_for_runtime(version_field, version_only=True) File "/usr/share/pycentral-data/pyversions.py", line 172, in requested_versions_for_runtime vinfo = parse_versions(vstring) File "/usr/share/pycentral-data/pyversions.py", line 58, in parse_versions raise ValueError, 'error parsing Python-Version attribute' ValueError: error parsing Python-Version attribute This problem appears for python-apt as well as the update manager packages. Also: Preparing to replace python-central 0.5.15ubuntu3 (using .../python-central_0.5.50ubuntu1_all.deb) ... Unpacking replacement python-central ... Appears just before the problems start. I think what we have here is a python-central bug ** Also affects: python-central (Ubuntu) Importance: Undecided Status: New -- package update-manager 1:0.87.9 failed to install/upgrade: subprocess pre-installation script returned error exit status 1 https://bugs.launchpad.net/bugs/194308 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs