We have an update submitted which should take care of this. Anyway for now, you can replace –
if (!is_single()) {
wp_enqueue_script('jquery-validate', MO_SCRIPTS_LIB_URL . '/jquery.validate.min.js', array('jquery'), '1.9.0', true);
wp_enqueue_script('jquery-ytpplayer', MO_SCRIPTS_LIB_URL . '/jquery.mb.YTPlayer.js', array('jquery'), '1.0', true);
wp_enqueue_script('jquery-prettyphoto', MO_SCRIPTS_LIB_URL . '/jquery.prettyPhoto.js', array('jquery'), '3.1.5', true);
wp_enqueue_script('jquery-isotope', MO_SCRIPTS_LIB_URL . '/jquery.isotope.min.js', array('jquery'), '1.5.19', true);
}
with
wp_enqueue_script('jquery-validate', MO_SCRIPTS_LIB_URL . '/jquery.validate.min.js', array('jquery'), '1.9.0', true);
wp_enqueue_script('jquery-ytpplayer', MO_SCRIPTS_LIB_URL . '/jquery.mb.YTPlayer.js', array('jquery'), '1.0', true);
wp_enqueue_script('jquery-prettyphoto', MO_SCRIPTS_LIB_URL . '/jquery.prettyPhoto.js', array('jquery'), '3.1.6', true);
wp_enqueue_script('jquery-isotope', MO_SCRIPTS_LIB_URL . '/jquery.isotope.min.js', array('jquery'), '1.5.19', true);
Pls note the removal of ending bracket as well.