bertoost/MODx-CronManager — pull request #10 by argnist (2012-06-19 06:50:45+00:00)
Title: for access without authorization

In file MODX_CONNECTORS_PATH.'index.php':

if (defined('MODX_REQP') && MODX_REQP === false) {
} else if (!$modx->context->checkPolicy('load')) {
header("Content-Type: application/json; charset=UTF-8");
header('HTTP/1.1 401 Not Authorized');
echo $modx->toJSON(array(
'success' => false,
'code' => 401,
));
@session_write_close();
die();
}

So my hosting cron couldn't get access to this script. I've solved it by

define('MODX_REQP',false);

May be you should add request var for this.