Thank you for your help in this matter.
I added the line "\consists Staff_collecting_engraver" as suggested,
and read the somewhat cryptic paragraph under Mark_engraver in the IR,
as indicated in the link you provided.
Unfortunately I still got the same error messages as before.
However, re-read
Le 13/11/2021 à 20:41, David Sumbler a écrit :
I have just started on a new Lilypond project, having had little
interaction with Lilypond for several months. I installed v.2.23.4.
Although I have so far only set 3 lines of music on 2 staves, the
message "programming error: cyclic dependency:
I have just started on a new Lilypond project, having had little
interaction with Lilypond for several months. I installed v.2.23.4.
Although I have so far only set 3 lines of music on 2 staves, the
message "programming error: cyclic dependency: calculation-in-progress
encountered for #'adjacent-