I also got an error about warning: no such program option: gui warning: ignoring option -dbackend="eps": invalid value; possible values are (ps cairo svg)
This seems like a Lilypond error. Is there a setting I might have messed up? (It was apparently removed in 2021 after introducing the cairo backend: https://gitweb.git.savannah.gnu.org/gitweb/?p=lilypond.git;a=commit;h=498a5503e9724f228d23d97114d454dda3e04383 and now everything's routed through the ps backend, though I don't see how this could have broken PDF display.)
