修改了configuration.php以后，网站出现session错误（已解决）

    因为最近有人黑我网站，所以不得已更改了FTP密码，然后就要更改joomla设置的FTP密码了，我头脑发昏，在FTP登陆以后，在FTP软件里面编辑了configuration.php，保存以后再一打开，下面出现了不少乱码（我想要是直接在joomla后台修改设置就没问题了，真晕）。我于是又用记事本重新修改了configuration.php然后上传，结果网站依然出了问题，前后台的上面都出现：
“
Warning: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at /var/www/vhosts/game2.com/httpdocs/configuration.php:1) in /var/www/vhosts/game2.com/httpdocs/libraries/joomla/session/session.php on line 407

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /var/www/vhosts/game2.com/httpdocs/configuration.php:1) in /var/www/vhosts/game2.com/httpdocs/libraries/joomla/session/session.php on line 407

Warning: Cannot modify header information - headers already sent by (output started at /var/www/vhosts/game2.com/httpdocs/configuration.php:1) in /var/www/vhosts/game2.com/httpdocs/libraries/joomla/session/session.php on line 410

Warning: Cannot modify header information - headers already sent by (output started at /var/www/vhosts/game2.com/httpdocs/configuration.php:1) in /var/www/vhosts/game2.com/httpdocs/templates/rt_mediamogul_j15/rt_styleswitcher.php on line 8”

     现在的问题是后台进不去了，想更新缓存也不行，很郁闷，我找了咱们论坛的帖子，有类似的情况，说是修
改编码就好了，不过我不管是修改configuration.php还是session.php的编码，都没什么用，还是出现这个字样。我看到白大哥提到过等过一阵子自己就好了，是因为缓存的关系。不过这样子挂着好别扭，不知道还有什么办法可以清空缓存呢？清空缓存就好了吗？
     这种问题还有没有别的解决办法呢？有的话希望指点一下吧。

修好了，太感谢了，就是把编码修改成ANSI，不过需要editplus3来编辑