خطا در آپدیت جوملا 2.5

[Devil Jin]

سلام
من روی سایتم جوملا 2.5.9 دارم که میخوام به 2.5.11 آپدیت کنم
موقع آپدیت بهم این پیغام رو میده:

-1 - An error has occurred.

Copy failed

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برای رفع مشکل از تنظیمات جوملا Joomla! Debug Console رو فعال کردم.

بهم این پیغام رو میده:

JFTP: :store: Bad response
Call stack
#    Function                Location
1    JAdministrator->dispatch()        JROOT/administrator/index.php:46
2    JComponentHelper::renderComponent()    JROOT/administrator/includes/application.php:153
3    JComponentHelper::executeComponent()    JROOT/libraries/joomla/application/component/helper.php:351
4    require_once()                JROOT/libraries/joomla/application/component/helper.php:383
5    JController->execute()            JROOT/administrator/components/com_installer/installer.php:18
6    InstallerControllerInstall->install()    JROOT/libraries/joomla/application/component/controller.php:761
7    InstallerModelInstall->install()    JROOT/administrator/components/com_installer/controllers/install.php:29
8    JInstaller->install()            JROOT/administrator/components/com_installer/models/install.php:105
9    JInstallerFile->install()        JROOT/libraries/joomla/installer/installer.php:472
10    JInstaller->copyFiles()            JROOT/libraries/joomla/installer/adapters/file.php:182
11    JFolder::copy()                JROOT/libraries/joomla/installer/installer.php:1616
12    JFTP->store()                JROOT/libraries/joomla/filesystem/folder.php:100
13    JError::raiseWarning()            JROOT/libraries/joomla/client/ftp.php:1000
14    JError::raise()                JROOT/libraries/joomla/error/error.php:276
Copy failed
Call stack
#    Function                Location
1    JAdministrator->dispatch()        JROOT/administrator/index.php:46
2    JComponentHelper::renderComponent()    JROOT/administrator/includes/application.php:153
3    JComponentHelper::executeComponent()    JROOT/libraries/joomla/application/component/helper.php:351
4    require_once()                JROOT/libraries/joomla/application/component/helper.php:383
5    JController->execute()            JROOT/administrator/components/com_installer/installer.php:18
6    InstallerControllerInstall->install()    JROOT/libraries/joomla/application/component/controller.php:761
7    InstallerModelInstall->install()    JROOT/administrator/components/com_installer/controllers/install.php:29
8    JInstaller->install()            JROOT/administrator/components/com_installer/models/install.php:105
9    JInstallerFile->install()        JROOT/libraries/joomla/installer/installer.php:472
10    JInstaller->copyFiles()            JROOT/libraries/joomla/installer/adapters/file.php:182
11    JFolder::copy()                JROOT/libraries/joomla/installer/installer.php:1616
12    JError::raiseError()            JROOT/libraries/joomla/filesystem/folder.php:102
13    JError::raise()                JROOT/libraries/joomla/error/error.php:251

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