[Plugin: WP-LESS] upgrade breaks less file

I upgraded to 1.3.1 from 1.2 and it looks like it doesn’t parse the .less file.

that’s the enque:

wp_enqueue_style( 'mycss', get_bloginfo( 'template_url' ).'/style.less', null, '', 'all' );

tested locally on mamp and online shared hosting (dreamhost), both running php 5.3.