Sorry! Attempt to access restricted file 不能正常运行vtigercrm

原因是config.inc.php的$root_directory设定错误导致，经常发生在安装之后更改vtiger的目录，例如安装的时候是

// root directory path
//$root_directory = 'D:\Program Files\Apache Software Foundation\Apache2.2\htdocs\vtigercrm/';

然后更改了目录名称D:\php_workspace，就要修改路径

$root_directory = 'D:\php_workspace\vtigercrm/';