I believe this is the same bug I have encountered. A workaround is described at https://superuser.com/a/575754/641073 (fix the DefaultDistro setting in /root/.synaptic/synaptic.conf)
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1574007 Title: synaptics refuses to run after upgrade to Xenial from Wily To manage notifications about this bug go to: https://bugs.launchpad.net/hundredpapercuts/+bug/1574007/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
