Hello: What has been done:
2.24.3 downloaded 2.24.3 extracted \users\Mark Opened Frescobaldi 3.30 Opened preferences Removed previous version of Lilypond Clicked Add Clicked file opener Went to \users\Mark\lilypond 2.24.3\gs Highlighted "gs" Clicked open Notice the "9.56.1". This seems to prevent Frescobaldi from opening the {c'1} test as indicated in the manual. My error? Thank you. Mark