Sorry for this temporary hickup, please upgrade apt/libapt-pkg4.16 and aptitude to the current version in wily and the problem should be fixed.
** Changed in: aptitude (Ubuntu) Status: Confirmed => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1503052 Title: aptitude does not start - symbol lookup error To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/aptitude/+bug/1503052/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs