How to correctly compile the Messiah from Neuvar's Site.

[Michael Dykes]

Hi,

I am needing help correctly compiling Handel's Messiah from the following 
website:

http://nicolas.sceaux.free.fr/index.php/2009/06/20/40

When I get into the scores.ily and attempt to just compile them I get so many 
errors: 

error: unknown escaped string: `\instrumentName'

error: unrecognized string, not in text script or \lyricmode

etc.

So, I thought I should go into the file folder marked "common" and start 
compiling there. It was going fine until I got to the file marked 
"layout.ily" and then I get the error message:

error: GUILE signaled an error for the expression beginning here

the expression being:

#(define-public *paper-size* (make-parameter 'a4))

Am I even compiling his .ily files correctly as I have never compiled .ily 
files? Forgive me if I should already know how to do this. I typically use 
Frescobaldi to compile all my lily files. Thanks so much!