请教安装基本到最后出现这种问题该如何解决 谢谢

Fatal error : Uncaught exception 'PDOException' with message 'SQLSTATE[HY000]: General error: 2014 Cannot execute queries while other unbuffered queries are active. Consider using PDOStatement::fetchAll(). Alternatively, if your code is only ever going to run against mysql, you may enable query buffering by setting the PDO::MYSQL_ATTR_USE_BUFFERED_QUERY attribute.' in D:\PHPnow-1.5.6\htdocs\crm\app\sys\install\model.php:352 Stack trace: #0 D:\PHPnow-1.5.6\htdocs\crm\app\sys\install\model.php(352): PDO->query('CREATE TABLE IF...') #1 D:\PHPnow-1.5.6\htdocs\crm\tmp\model\install.php(10): installModel->createTable('5.1') #2 D:\PHPnow-1.5.6\htdocs\crm\app\sys\install\model.php(234): extinstallModel->createTable('5.1') #3 D:\PHPnow-1.5.6\htdocs\crm\app\sys\install\control.php(108): installModel->checkConfig() #4 D:\PHPnow-1.5.6\htdocs\crm\framework\base\router.class.php(1690): install->step3() #5 D:\PHPnow-1.5.6\htdocs\crm\www\sys\install.php(37): baseRouter->loadModule(Array, Array) #6 {main} thrown in  D:\PHPnow-1.5.6\htdocs\crm\app\sys\install\model.php  on line  352