Error from lilypond: hyphen not finished yet

[Patrick Horgan]

I'm a newby at lilypond and while trying to use it on O Magnum Mysterium, got the following error many times:

programming error: hyphen not finished yet
continuing, cross fingers

Can anyone give me a pointer to where to start?   The final output actually looks ok, but has this:

\raisebox{10mm}{\parbox{188mm}{\thefooter\quad\small\noindent Mutopia-2005/01/22-244 \hspace{\stretch

at the bottom of the last page.

Thanks,
Patrick