I am getting the following error when I try to activate the Options page Addon with the new Pro version of ACF
Fatal error: Cannot redeclare acf_set_options_page_title() (previously declared in /var/www/vhosts/trucktimeline.com/httpdocs/wp-content/plugins/advanced-custom-fields-pro/pro/api/api-options-page.php:417) in /var/www/vhosts/trucktimeline.com/httpdocs/wp-content/plugins/acf-options-page/acf-options-page.php on line 567
You’re using ACF Pro, you don’t need the Options Page Addon, it’s included. You’re getting the error because the addon contains the same classes/functions that are already set up by ACF Pro.