Hi @ray and @redbacksolutions
Elliot here – ACF dev.
Firstly, my apologies for this bug.
We found and fixed this bug shortly after release and re-uploaded the plugin files.
Here are the avialbale solutions:
1. Re-download the options page plugin
2. Edit the plugin file ‘includes/options-page.php’ on line 96 to $page[ $new ] = $page[$old];
3. Change your acf_add_options_sub_page() args array from ‘title’ to ‘page_title’
Thanks
Elliot
