织梦安装留言板后，登录页变空白的解决方法

function keepUser()
    {
        if($this->userID != '' && $this->userType != '')
        {
            global $admincachefile,$adminstyle;
            if(empty($adminstyle)) $adminstyle = 'dedecms';

            //if (!isset($_SESSION[$this->keepUserIDTag]))
			@session_register($this->keepUserIDTag);
            $_SESSION[$this->keepUserIDTag] = $this->userID;

			//if (!isset($_SESSION[$this->keepUserTypeTag]))
            @session_register($this->keepUserTypeTag);
            $_SESSION[$this->keepUserTypeTag] = $this->userType;

            //if (!isset($_SESSION[$this->keepUserChannelTag]))
			@session_register($this->keepUserChannelTag);
            $_SESSION[$this->keepUserChannelTag] = $this->userChannel;

            //if (!isset($_SESSION[$this->keepUserNameTag]))
			@session_register($this->keepUserNameTag);
            $_SESSION[$this->keepUserNameTag] = $this->userName;

            //if (!isset($_SESSION[$this->keepUserPurviewTag]))
			@session_register($this->keepUserPurviewTag);
            $_SESSION[$this->keepUserPurviewTag] = $this->userPurview;

            //if (!isset($_SESSION[$this->keepAdminStyleTag]))
			@session_register($this->keepAdminStyleTag);
            $_SESSION[$this->keepAdminStyleTag] = $adminstyle;

            PutCookie('DedeUserID', $this->userID, 3600 * 24, '/');
            PutCookie('DedeLoginTime', time(), 3600 * 24, '/');
            
            $this->ReWriteAdminChannel();
            
            return 1;
        }
        else
        {
            return -1;
        }
    }

      但依旧没有解决该问题；于是继续百度，发现一个让织梦显示错误的方法 如下：

      找到:include/common.inc.php文件，打开，查找程序代码：

// error_reporting(E_ALL);
error_reporting(E_ALL || ~E_NOTICE);

改为：

error_reporting(E_ALL);
// error_reporting(E_ALL || ~E_NOTICE);