Hello,
With the following input :
----------------
\version "2.8.6"
test = {\clef bass \key g \minor \time 4/2
d,4 bes a g d,8 g fis e fis c' bes-\parenthesize -\prall a
}
\score {
\new Staff \test
\layout { }
}
----------------
I get the following funny message :
----------------
programming error: minimise_least_squares (): Nothing to minimise
continuing, cross fingers
----------------
The problem seems to come from the -\parenthesize -\prall command, and
appears several times when compiling my scores, but not every time I use
this command.
It seems also that crossing fingers is a good idea, since the result is
correct, but maybe there is a problem nevertheless...
Hope it helps.
Regards.