I'm not sure if anyone else is having the same issue, but I was having issues where no featured image was uploaded. So I added this code to allow the youtube image to be uploaded via the url and added in the postmeta.
Add this after line: 254 ( after the "WP_ayvpp_insert_post" function ):
$last = wp_get_recent_posts('1'); $url = "http://img.youtube.com/vi/".$i."/maxresdefault.jpg"; $post_id = $last['0']['ID']; $desc = "Imported from Youtube"; $thumb_nail_id = $post_id + 1; media_sideload_image($url, $post_id, $desc); add_post_meta($post_id,'_thumbnail_id', $thumb_nail_id);
Also 'Comment' out line: 369 ( function update_post_meta )