Dashboard features not working correctly

Hi There,

I am currently developing the website in the private box:

Everything works great however some of the Dashboard features do not work properly. For example when i edit a page and click on Add media no window is displayed, also i am unable to get any of the drop down features to work i.e for widgets or featured images.

I have updated the theme and the WordPress Install and have also deactivated all plugins however the issues still happens however when i use another theme it all works great.

Any help would be greatly appreciated.

Thanks,

Jyles