System -> Admin -> Printing -> New -> (that wizard)
Click Generic CUPS-PDF Printer -> Forward -> Accept defaults for Printer name, description and location -> Apply
Get the dialog you see in the attachment, click OK.
Click 'Yes' to Would you like to print a test page?
Job 21 submitted.
Get no PDF out.
System -> Admin -> Printing -> New -> (that wizard)
Click Generic CUPS-PDF Printer -> Forward -> Accept defaults for Printer name, description and location -> Apply
Get the dialog you see in the attachment, click OK.
Click 'Yes' to Would you like to print a test page?
Job 21 submitted.
Get no PDF out.