管理面板无法更改设置，老是temporarily unavailable！

在管理面板中，无论更改哪个设置，只要“提交保存”，就是下面这个提示：

The page you are looking for is temporarily unavailable.
Please try again later.

请各位大大帮忙看看是哪里的问题？搜了下也没找到什么解决办法。

MySQL权限只有：CREAT、ALERT、DROP。

下面是运行环境相关信息：

附加说明：

刚安装好时，是可以更改设置的。

不知道动了哪里，成现在的样子。

下面是Nginx的rewrite规则，禁用后仍然不行：

#rewrite ^([0-9]+)/spacelist(.*)$ index.php?$1/action_spacelist$2;
#rewrite ^([0-9]+)/viewspace_(.+)$ index.php?$1/action_viewspace_itemid_$2;
#rewrite ^([0-9]+)/viewbbs_(.+)$ index.php?$1/action_viewbbs_tid_$2;
#rewrite ^([0-9]+)/(.*)$ index.php?$1/$2;
#rewrite ^([0-9]+)$ index.php?$1;
#rewrite ^action_(.+)$ index.php?action_$1;
#rewrite ^category_(.+)$ index.php?action_category_catid_$1;
#rewrite ^itemlist_(.+)$ index.php?action_itemlist_catid_$1;
#rewrite ^viewnews_(.+)$ index.php?action_viewnews_itemid_$1;
#rewrite ^viewthread_(.+)$ index.php?action_viewthread_tid_$1;
#rewrite ^index([\.a-zA-Z0-9]*)$ index.php;
#rewrite ^html/([0-9]+)/viewnews_itemid_([0-9]+)\.html$ index.php?action_viewnews_itemid_$2;
#rewrite ^/([0-9]+)/spacelist(.+)$ /index.php?uid/$1/action/spacelist/type$2;
#rewrite ^/([0-9]+)/viewspace(.+)$ /index.php?uid/$1/action/viewspace/itemid$2;
#rewrite ^/([0-9]+)/viewbbs(.+)$ /index.php?uid/$1/action/viewbbs/tid$2;
#rewrite ^/([0-9]+)/(.*)$ /index.php?uid/$1/$2;
#rewrite ^/([0-9]+)$ /index.php?uid/$1;
#rewrite ^/action(.+)$ /index.php?action$1;
#rewrite ^/category(.+)$ /index.php?action/category/catid$1;
#rewrite ^/viewnews(.+)$ /index.php?action/viewnews/itemid$1;
#rewrite ^/viewthread(.+)$ /index.php?action/viewthread/tid$1;
#rewrite ^/mygroup(.+)$ /index.php?action/mygroup/gid$1;

问题已解决！

后台更新一下缓存即可！