Hi guys
I can confirm that ACF 4.3.2 and WP 3.8 are working well together.
May I ask which color theme you are using in the wp-admin?
Also, can you turn on DEBUG MODE in your wp-config.php file and report any PHP errors on the page
Also open your console log and report any JS errors on the page.
This may be a conflict between another plugin / theme code and WP 3.8 which is then snowballing into an issue which stops ACF from working.
Thanks
E