> So it would appear that your files relied on constructs that convert-ly
> (of course assuming that you had correct \version headers for the _old_
> version so that convert-ly would actually be inclined to try converting)
> is not able to upgrade.
> Without an actual example, not more than that can be said or done.
Think I got it. I do appreciate your input and willingness to help.
All my string tunings used numbers (semi-tones); as soon as I went to the pre-
defined "banjo-open-g-tuning" everything worked great. Still, the program's
response wasn't all that helpful in pointing that out.
Then, documentation says pre-defined tunings are in
"scm/string-tunings-init.scm" but they're not:
I found them in ly/string-tunings-init.ly -- and changes made
there (custom tunings and names) seem to work so far.