cannot complete setup Receive error 5012

Using hp laptop model 15-f2 72 wm (new computer) removed Win 10, installed Xubuntu 14.04.3 amd 64. hplip vers 3.14.3 - setup shows recognition of HP Envy 4500 via wireless (as well as a few other wifi signals) connection but hplip will not control printer, Printer does print without the hplip help. Software driver in Xubuntu does its job. I have a desktop computer with 14.04 32 bit which simply works as advertised, same wifi. Also find it necessary to run cable connection from wifi modem to laptop. Wifi works with all other computers in the house. The desktop is cabled because there is no wifi modem in the desktop.
The laptop is meant as a portable backup and, obviously, a saved file could be swapped from the laptop (in an inconvenient remote position) then printed to the ,also cabled, Envy 4500. Best is if I can avoid inconvenience. Have used hp-setup and got a note to try hp-repair or some similar terminal tool which did not change the operation nor results.
I repeat the ever present error message 5012. I think I have tried about every possible combination and hope you can guide me.
Thanks in advance -- Jack