I was using the default CSV export file, which for some reason was seperated by semi-colons!!
$loopend()build on %_date%
Throws up a syntax error, I remember reading about putting a escape character before the quotes etc.....I've just got to remember where I saw it!!
Using ' as the escape character solves the syntax error, but the output in the CSV is..
%artist% %title% %album% %comment% %year% %_length %_file_size%
So it doesn't parse the placeholders....I'm confused!