If you decide to update to WordPress 3.9 please be advised that you'll need to update your shortcodes plugin as well.
Please, remove the old version from your server first, then upload and activate this new one.
Thank you very much for your patience.
PLEASE, RE-DOWNLOAD THE PLUGIN AND INSTALL IT AGAIN IF YOU ARE HAVING PROBLEMS WITH IT APPEARING IN THE EDITOR OR NOT INSERTING THE SHORTCODE IN THE EDITOR. WE ARE DEEPLY SORRY FOR THIS, THERE WAS A MISCALCULATION WITH THIS.