On Sun, 2025-09-28 at 20:59 +0200, sj wrote: > I also got an error about > > warning: no such program option: gui this is due to a lack of checking on the lilypond version number - the option is no longer needed in recent versions. > warning: ignoring option -dbackend="eps": > invalid value; possible values are (ps cairo svg)
Even with this invalid value LilyPond does generate the correct .png file, what is missing is a viewer program, which can be set in the Edit->Change Preferences Externals tab (you can exercise this code via Command: Export Selection as PNG Displays a musical excerpt in your image viewer Location: Main Menu ▶ File ▶ Export As Internal Name: PrintExcerptPreview ) So this is a bug in the error reporting - it should report that the viewer program cannot be found. Richard > > 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.) >
