public static function init() { if (self::is_gravityforms_installed()) { global $gf_cpt_addon; //include the base class require_once self::get_base_path() . '/gfcptaddonbase.php'; //only supports 1.5 and over require_once self::get_base_path() . '/gfcptaddon_1-5.php'; $gf_cpt_addon = new GFCPTAddon1_5(); //start me up! $gf_cpt_addon->init(__FILE__); } }