Reason For Closing:
Encountered this bug in HPLIP 3.16.9 (current version in M-16). Causes an error on installing new printer from "Device Manager"...tries to download a plugin (hplip-3.16.9-plugin.run) and complains file does not match its checksum.
Users then must download the plugin manually (if they can find the right place: https://www.openprinting.org/download/printdriver/auxfiles/HP/plugins/
Bottom line: The bug is fixed in HPLIP versions >= 3.16.10-1