I have had no response to my previous post, so I will try again. On Mac OS 10.14.6 (Mojave), running LilyPond directly from the application and using Update Syntax” from the “Compile” menu, applying it to the “Welcome to Lilypond” file after renaming it “test 1.ly”, the following error message is produced:
--------- Traceback (most recent call last): File "/Applications/LilyPond_2.21.4..app/Contents/Resources/bin/convert-ly", line 86, in <module> import convertrules File "/Applications/LilyPond_2.21.4..app/Contents/Resources/share/lilypond/current/python/convertrules.py", line 26, in <module> import lilylib File "/Applications/LilyPond_2.21.4..app/Contents/Resources/share/lilypond/current/python/lilylib.py", line 30, in <module> sys.stdin = codecs.getreader('utf8')(sys.stdin.detach()) AttributeError: 'file' object has no attribute ‘detach' ———— I saw the same behavior with 2.21.1 and 2.21.3 when I attempted to update older files. What am I missing? Thanks, Stan