Hi @Mr. Hyde
I think you will find this doc very helpful:
http://www.advancedcustomfields.com/resources/getting-started/including-lite-mode-in-a-plugin-theme/
Basically, you need to ‘NOT enable’ LITE mode, create your fields, export them to PHP, include them in your functions.php file and then enable LITE mode.
LITE mode will prevent the wp-admin files from being loaded.
Does that help?
Thanks
E
