Update to my earlier post …
Have got it working now, couple of points to take into account.
1) If your developer makes updates on your behalf makes sure he/she is aware of the required coding <?php wp_footer(); ?> mine updated the footer.php and must of accidentally deleted it.
2) I then tried to add the code myself but added it to the wrong theme … Make sure your updating the correct theme footer.php file.
Hope this helps