Magento installation in plesk 11.09 not possible

[Sepp2006]

Install Magento Ecommerce by FTP with Magento downloader the following error:
Fresh install from iso ubuntu.
try it also with update on debian server from 10.4.4 to 11.09
Also Extensions can not be install via FTP the do not work.
Server error 500

Error in file: "/var/www/vhosts/sample.com/httpdocs/mag/app/code/core/Mage/Sales/sql/sales_setup/upgrade-1.6.0.5-1.6.0.6.php" - SQLSTATE[42S21]: Column already exists: 1060 Duplicate column name 'vat_request_success'

Trace:
#0 /var/www/vhosts/sample.com/httpdocs/mag/app/code/core/Mage/Core/Model/Resource/Setup.php(645): Mage::exception('Mage_Core', 'Error in file: ...')
#1 /var/www/vhosts/sample.com/httpdocs/mag/app/code/core/Mage/Core/Model/Resource/Setup.php(437): Mage_Core_Model_Resource_Setup->_modifyResourceDb('upgrade', '1.6.0.5', '1.6.0.7')
#2 /var/www/vhosts/sample.com/httpdocs/mag/app/code/core/Mage/Core/Model/Resource/Setup.php(320): Mage_Core_Model_Resource_Setup->_upgradeResourceDb('1.6.0.5', '1.6.0.7')
#3 /var/www/vhosts/sample.com/httpdocs/mag/app/code/core/Mage/Core/Model/Resource/Setup.php(235): Mage_Core_Model_Resource_Setup->applyUpdates()
#4 /var/www/vhosts/sample.com/httpdocs/mag/app/code/core/Mage/Core/Model/App.php(417): Mage_Core_Model_Resource_Setup::applyAllUpdates()
#5 /var/www/vhosts/sample.com/httpdocs/mag/app/code/core/Mage/Core/Model/App.php(343): Mage_Core_Model_App->_initModules()
#6 /var/www/vhosts/sample.com/httpdocs/mag/app/Mage.php(683): Mage_Core_Model_App->run(Array)
#7 /var/www/vhosts/sample.com/httpdocs/mag/index.php(87): Mage::run('', 'store')
#8 {main}

In Plesk 10.4.4 is everything ok, no errors

 

[IgorG]

Why you cant install Magento from "Application" tab of your subscription?

 

[Sepp2006]

we restart the server and everything is ok, i do not no what was happen.