Jabref custom export to html not working

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http://stackoverflow.com – I am trying to export my entries from a jabref database to an html file. I went to 'manage custom exports' and added the directory where the main layout file and the begin and end files are located. The layout files look like this: newHtmlBib.begin.layout: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html lang="en"> <head> <title>JabRef References output</title> <style type="text/css"> body { font-size: 100%; font-family: Arial, sans-serif; } </style> </head> <body> newHtmlBib.layout: & (HowTos)