I think I have the same problem as described by Laura Conrad (28 May; 3
June) on the lilypond.devel-list.
Up to now no one answered this question. So I want to post it to this list:
In my *.lytex file I played around with:
But always with the same effect:
The first two systems of a score are placed side by side instead of among
each other. The second systems, needless to say, runs out of the page.
The rest of each piece is ok.