Could not load DBAPI class error in WordPress after updating to Evo 1.0.15

define('MODX_BASE_PATH', dirname(dirname(dirname(dirname(dirname(__FILE__))))) . '/');

//define("IN_ETOMITE_PARSER", "true"); // provides compatibility with etomite 0.6 and maybe later versions
define("IN_PARSER_MODE", "true");
define("IN_MANAGER_MODE", "false");

if (!defined('MODX_API_MODE')) {
    define('MODX_API_MODE', true);
}

// initialize the variables prior to grabbing the config file
$GLOBALS['database_type'] = 'mysql';
$GLOBALS['database_server'] = 'mysql.xxx.com';
$GLOBALS['database_user'] = 'xxx';
$GLOBALS['database_password'] = 'xxx';
$GLOBALS['dbase'] = 'xxx_modx';
$GLOBALS['table_prefix'] = 'modx_';
$GLOBALS['base_url'] = 'http://www.xxx.com/';
$GLOBALS['base_path'] = '/home/xxx/xxx/';
define('MODX_BASE_URL', $GLOBALS['base_url']);
define('MODX_SITE_URL', $GLOBALS['base_url']);

$ipath = ini_get('include_path');
ini_set('include_path', $ipath . ':' . $GLOBALS['base_path']);

// initiate a new document parser
include_once($GLOBALS['base_path'].'manager/includes/document.parser.class.inc.php');
$GLOBALS['modx'] = new DocumentParser;
$modx =& $GLOBALS['modx'];
$etomite = &$GLOBALS['modx']; // for backward compatibility

// set some parser options
$modx->minParserPasses = 1; // min number of parser recursive loops or passes
$modx->maxParserPasses = 10; // max number of parser recursive loops or passes
$modx->dumpSQL = false;
$modx->dumpSnippets = false; // feed the parser the execution start time
$modx->tstart = $tstart;

$modx->getSettings();
$modx->documentMethod = 'id';
$modx->documentIdentifier = 8; // modx page ID that links to wordpress

include_once("../cache/siteManager.php");
define('MODX_API_INC', '../../'.MGR_DIR.'/includes/');
require_once(MODX_API_INC.'protect.inc.php');
require_once(MODX_API_INC.'config.inc.php');
define('MODX_API_MODE', true);
startCMSSession();
include_once(MODX_API_INC.'document.parser.class.inc.php');
$modx = new DocumentParser;
$modx->db->connect();
$modx->getSettings(); // provide the $modx->documentMap and user settings