You apparently have a file written for an older version of LilyPond
and haven't updated the file syntax to correspond to your current version.
Hopefully, the original author of the file (you?) has remembered to include
a \version ... command in the file. In that case, it's just to run
convert-ly
Hello
I installed LilyPond on WinXP (SP2) and tried it with
"blue_danube.ly" to get this error message:
-[ start of error dump ]-
# -*-compilation-*-
Changing working directory to `/sheets'
Processing `/sheets/blue_danube_new.ly'
Parsing...
/sheets/blue_danube_new.ly:344:19:
error: syn
