@Damian I presume you used Andrea's ppa. She sent me a .deb which I installed instead of the libsane-hpaio in the Quantal hplip package. It worked for me and Piedro and I've had no further problems. I'll try to attach it to this comment. Hope it works!
** Attachment added: "libsane-hpaio_3.12.6-3ubuntu4_amd64.deb" https://bugs.launchpad.net/ubuntu/+source/hplip/+bug/1069898/+attachment/3437670/+files/libsane-hpaio_3.12.6-3ubuntu4_amd64.deb -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1069898 Title: regression: cannot open network scanner with error "unable to read device-id ret=-1" To manage notifications about this bug go to: https://bugs.launchpad.net/hplip/+bug/1069898/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs