Hello all,
I suspect I'm just being a bit thick...typesetting some mensural notation, and having an issue with the mensural signs/time sigs. It looks like the definitions of these in terms of modern time signatures are in half values; e.g., "Circle" maps on to 3/2, when it should map on to 3/1.
My second issue is that lilypond initially couldn't seem to find any of the various mensural clefs that have a number on the end. I managed to make it work by enclosing the clef name in double quotes, but am not sure why that worked.