I think you have illegal invisible characters in your document. Make sure the spaces are really spaces and no other characters. There could also be a byte order mark at the start of your file, I'm not sure if that's allowed. Try saving the file as UTF-8 without BOM.
Those who dance are thought mad by those who hear not the music. This tiny ad plays the bagpipes:
a bit of art, as a gift, the permaculture playing cards