This was still an issue as of today with Linux Mint 19. I installed the plugin manually as Afshan suggested and it worked for me.
Download the latest files here https://www.openprinting.org/download/printdriver/auxfiles/HP/plugins/ at the very bottom of the of the page find the latest files and copy them to a location you can easily remember to get to, from the CLI. Open a terminal and cd to the file location then just sh hplip-3.18.12.run and choose the right filename for the version you downloaded. Follow the instructions and it will load the missing plugin for you. Setup will then work as will all the other commands in Hp Device Manager -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1749690 Title: hp-setup fails to install plugin To manage notifications about this bug go to: https://bugs.launchpad.net/hplip/+bug/1749690/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
