Hi, each lilypond file should contain a version statement, because parts of the syntax changes from version to version. If you have this line: \version "2.18.2" (i.e. you state the version for which the file was written) and you will use version 2.20 in future, you can automatically update the syntax with convert-ly (also in the Tools menu of Frescobaldi).
Your file is technically ok, but because of the importance of the version statement it warns you this way that it is missing. HTH Joram _______________________________________________ lilypond-user mailing list lilypond-user@gnu.org https://lists.gnu.org/mailman/listinfo/lilypond-user
