the selected printer is detected but not installed completely on your mac

[Jay_G24]

Try the below suggestions -

1. Uninstall HP Smart -please delete from /Users/Username/Library/Application Support/HP Smart. Then delete HP Smart from the Applications folder
2. Try updating mac/ios and printer firmware
3. Install HP Smart from the APP store 
   Try updating mac and printer firmware
    
   To update the printer's firmware, refer - HP Printers - Updating or Upgrading Printer Firmware 
    To update Mac, try these steps - How to update the software on your Mac

 and then try and print the document.

Hope this helps! Keep me posted. 

[Schörschu]

Thanks Jay_G24

I have uninstalled HP Smart including Users etc.

Then I reinstalled the printer with HP Smart

This is the new Printer Information

I checked that I have the newest update

I also checked that my Mac has the newest update

I tried again to print my custom paper size 418 by 147 mm.

This is the message I received on the printer

When I put the paper into the printer I got this message:

Is it possible there is a problem with this printer?

Thanks for your help

So long Schörschu

[Jay_G24]

If you are able to make regular copies on plain paper, then it's not a printer issue.

I think this issue needs some additional technical assistance that can be better provided through one-on-one interaction or a remote session with our HP Support team.

Please reach out to HP Support in your region for further assistance.

Hope this helps, keep me posted!