I downgraded libc6 and libc6-bin to 2.21-0ubuntu6 and this stopped happening. I had to dpkg --force --remove 'locales' too, to be able to downgrade libc6-bin.
** Also affects: glibc (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1560459 Title: Using Pending iso ubiquity crashes before the first page opens To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/glibc/+bug/1560459/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs