Lilypond preview

[Stephen Luttrell]

I have OS X 10.11.6 and LyX 2.2.1 with (1) Look & Feel / Display / Display 
graphics checked, and (2) Look & Feel / Display / Instant preview set to “On”.

If I open Help / Specific Manuals / LilyPond, then after a short delay the 
various LilyPond insets — these are inside Preview insets, such as in section 
2.3 on Previews — display themselves in the LyX window as blank regions, 
whereas I would have expected fragments of musical score to appear. However, 
when I view the corresponding PDF the music is displayed correctly, but it 
would be really nice for the Preview insets to work as expected in the LyX 
window.

In case it is relevant, preview of mathematical formulae in my LyX window works 
correctly.

Stephen Luttrell