cups-genppd is installed as "cups-genppd.5.2". The docs reference "cups-genppd". It needs a symlink.
A commit references this bug: Author: cmt Date: Sat Mar 24 15:31:41 UTC 2018 New revision: 465457 URL: https://svnweb.freebsd.org/changeset/ports/465457 Log: gutenprint: fixes around genppd * in papers.xml, rename "Greeting Card" paper format names to not contain decimal points ("."), as gutenprint's internal list handling rejects points in element names. I guess these paper formats never really worked, but I can't really test this for lack of a supported printer. * create symlink cups-genppd to cups.genppd.5.2 to match documentation. PR: 226863 226865 Reported by: freebsd dreamchaser org Changes: head/print/gutenprint/Makefile head/print/gutenprint/files/patch-src_xml_papers.xml head/print/gutenprint/pkg-plist
symlink added. that was a quick one.