Comment 16 for bug 1806352

> When I click 'Next', just get 'Failed to install Plug-in'.

This could be

https://bugs.launchpad.net/hplip/+bug/1807051

> HP Device plug-in version mismatch or some files are corrupted.

Download *.run and *.asc from

 https://developers.hp.com/hp-linux-imaging-and-printing/plugins

and install the plugin with 'hp-plugin -p .....'

--
Brian.