Lilypond-LaTeX + a4 paper size problem in TeXShop

[Adam Good]

Hi, I just did some updating of my computer, since then I've had to  
re-install apps like Lilypond + TeXShop with Lilypond-LaTeX . Thought  
that would go smoothly but I'm now getting weird things with paper  
sizing.

I'm running:
OSX 10.4.9 (just upgraded from OSX 10.3.9)
TeXShop version 1.43

something as simple as this:

%%%%%%%%%%
\documentclass[11pt]{article}
\usepackage{geometry}
\geometry{a4paper}

\begin{document}
blah blah blah di blah
\end{document}
%%%%%%%%%%

...will give me a4 paper size when i use the LaTeX engine but when I  
use Lilypond-LaTeX.engine i constantly get letterpaper size in the  
output. I never had that before with my last setup, was always  
getting a4 by default somehow.

Can anyone help?

btw i've been to Nicola's page:

http://www.dimi.uniud.it/~vitacolo/freesoftware.html

and the page gives a "Bad Gateway" so I can't hunt around for some  
part of the installation I may have missed.

Thanks!

Adam Good