i found this error while doing a reinstall but a way around this is to add users though the terminal... at lest it worked for me
-- [users-admin]cannot create user when the /home directory already exist https://bugs.launchpad.net/bugs/190815 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