Error in latest lilypond git HEAD with complex score

[H. S. Teoh]

Hi,

I'm testing out the latest git HEAD version of lilypond with an
orchestral score, and I'm getting this error:

-------------
Parsing...ERROR: In procedure %resolve-variable:
Unbound variable: ly:duration-length
ice-9/eval.scm:159:9: Throw to key `numerical-overflow' with args `("divide" 
"Numerical overflow" #f #f)'.
-------------

There's no indication of what in the score might have triggered this
error.  Previous versions of lilypond compile the score just fine, so
I'm at a loss as to what the problem might be. The last good version
AFAIK is commit f1ad21caa. The following commit, 6c1081a82, appears to
be the change that broke this, though I've no idea why it should, and
what my score has to do with it (nowhere in my score do I reference
ly:duration-length directly).

I'd reduce the score to narrow down the problem, but since it's rather
large and contains auto-generated parts, reduction is very
time-consuming unless anyone has any ideas on where the problem might be
so that I can narrow it down quicker.


T

-- 
What do you call a boomerang that doesn't come back?  A stick.