I imported a lilypond file with include-external file-filename.ly. I
checked that file in advance to make sure it will be compiled correctly
with lilypond. If I try a pdf preview in Lyx, I get an error and the
head of the protocol is:
This is pdfTeX, Version 3.1415926-1.40.10 (TeX Live 2009/Debian)
(format=pdflatex 2012.7.20) 16 JAN 2013 13:41
entering extended mode
%&-line parsing enabled.
Babel <v3.8l> and hyphenation patterns for english, usenglishmax,
What is wrong? Any help please?