我用Joomla好幾年，在自己租用的虛擬主機，裝了好幾份Joomla皆成功，中文語言檔也使用順利。
今天，裝了 Joomla 2.5.11 在學校的主機，接著，安裝中文語言檔，竟然失敗！
我推測可能是 Linux 的檔案夾權限沒設定好，或者 MySQL 的權限設定需修改。
學校電算中心的管理老師，對於Joomla不熟，我暫時不想去問他，先由網路討論區，請高手指點指點。

謝謝大家！

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我遇到的錯誤訊息如下：

Warning: Failed to move file!
Sort aborted SQL=SELECT folder AS type, element AS name, params FROM xo4ba_extensions WHERE enabled >= 1 AND type ='plugin' AND state >= 0 AND access IN (1,1,2,3) ORDER BY ordering
MySQL server has gone away SQL=SELECT folder AS type, element AS name, params FROM xo4ba_extensions WHERE enabled >= 1 AND type ='plugin' AND state >= 0 AND access IN (1,1,2,3) ORDER BY ordering
MySQL server has gone away SQL=SELECT folder AS type, element AS name, params FROM xo4ba_extensions WHERE enabled >= 1 AND type ='plugin' AND state >= 0 AND access IN (1,1,2,3) ORDER BY ordering
MySQL server has gone away SQL=SELECT folder AS type, element AS name, params FROM xo4ba_extensions WHERE enabled >= 1 AND type ='plugin' AND state >= 0 AND access IN (1,1,2,3) ORDER BY ordering
Error loading component: com_installer, 1
MySQL server has gone away SQL=SELECT folder AS type, element AS name, params FROM xo4ba_extensions WHERE enabled >= 1 AND type ='plugin' AND state >= 0 AND access IN (1,1,2,3) ORDER BY ordering
Error loading module MySQL server has gone away SQL=SELECT m.id, m.title, m.module, m.position, m.content, m.showtitle, m.params, mm.menuid FROM xo4ba_modules AS m LEFT JOIN xo4ba_modules_menu AS mm ON mm.moduleid = m.id LEFT JOIN xo4ba_extensions AS e ON e.element = m.module AND e.client_id = m.client_id WHERE m.published = 1 AND e.enabled = 1 AND (m.publish_up = '0000-00-00 00:00:00' OR m.publish_up <= '2013-06-13 05:30:01') AND (m.publish_down = '0000-00-00 00:00:00' OR m.publish_down >= '2013-06-13 05:30:01') AND m.access IN (1,1,2,3) AND m.client_id = 1 AND (mm.menuid = 0 OR mm.menuid <= 0) ORDER BY m.position, m.ordering

我再度操作，錯誤碼沒那麼長，只有

Warning: Failed to move file!

看起來，像是檔案夾權限的設定問題。
請問我需要修改哪些權限？

自己查一查，好幾個檔案夾，權限皆是 755 。
但我沒有深入詳查每一層級的檔案夾，
不知道關鍵點在何處？

我移除Joomla，重新安裝Joomla，接著再安裝中文語言檔，成功了！
之前為何失敗，我不知道原因。