the metabox defaults to the value that was set through
set_post_thumbnail_size, it'd be great if you could pass in the constructor either size or name and use that size where the new interface exists, i.e.:
set_post_thumbnail_size( 298, 167, true ); //the default size used in the thumbnail interface add_image_size( 'athlete_thumb', 138, 174, true ); //the size i want in the new interface new MultiPostThumbnails( array( 'label' => 'Athlete Thumbnail Image', 'id' => 'id_athlete_thumb', 'post_type' => 'athlete', 'size' => 'athlete_thumb' //new addition ));
besides its great! thanks for the effort!