Проблема с application.php on line 446 и er.php on line 47 - Joomla 1.5: Настройка и оптимизация

После переноса сайта http://praha-hotel.ru/ на другой хостинг отображаются ошибки
Warning: Invalid argument supplied for foreach() in /var/www/praha604/data/www/praha-hotel.ru/libraries/joomla/plugin/helper.php on line 47
Warning: Invalid argument supplied for foreach() in /var/www/praha604/data/www/praha-hotel.ru/libraries/joomla/plugin/helper.php on line 47
Warning: Invalid argument supplied for foreach() in /var/www/praha604/data/www/praha-hotel.ru/includes/application.php on line 446

и на странице админки http://praha-hotel.ru/administrator/?admin
Warning: Invalid argument supplied for foreach() in /var/www/praha604/data/www/praha-hotel.ru/libraries/joomla/plugin/helper.php on line 47
Warning: Invalid argument supplied for foreach() in /var/www/praha604/data/www/praha-hotel.ru/libraries/joomla/plugin/helper.php on line 47

на странице админки в таблице была такая ошибка, но после создания пустой базы praha604_bd.lamp_extensions она изменилась на то, что есть сейчас на http://praha-hotel.ru/administrator/?admin
JLIB_APPLICATION_ERROR_COMPONENT_NOT_LOADING
Table 'praha604_bd.lamp_extensions' doesn't exist SQL=SELECT folder AS type, element AS name, params FROM lamp_extensions WHERE enabled >= 1 AND type ='plugin' AND state >= 0 AND access IN (1) ORDER BY ordering
Table 'praha604_bd.lamp_extensions' doesn't exist SQL=SELECT folder AS type, element AS name, params FROM lamp_extensions WHERE enabled >= 1 AND type ='plugin' AND state >= 0 AND access IN (1) ORDER BY ordering
Table 'praha604_bd.lamp_extensions' doesn't exist SQL=SELECT folder AS type, element AS name, params FROM lamp_extensions WHERE enabled >= 1 AND type ='plugin' AND state >= 0 AND access IN (1) ORDER BY ordering
Table 'praha604_bd.lamp_extensions' doesn't exist SQL=SELECT folder AS type, element AS name, params FROM lamp_extensions WHERE enabled >= 1 AND type ='plugin' AND state >= 0 AND access IN (1) ORDER BY ordering
Error loading component: com_login, 1
Error loading module Table 'praha604_bd.lamp_extensions' doesn't exist SQL=SELECT m.id, m.title, m.module, m.position, m.content, m.showtitle, m.params, mm.menuid FROM lamp_modules AS m LEFT JOIN lamp_modules_menu AS mm ON mm.moduleid = m.id LEFT JOIN lamp_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 <= '2014-07-15 12:15:02') AND (m.publish_down = '0000-00-00 00:00:00' OR m.publish_down >= '2014-07-15 12:15:02') AND m.access IN (1) AND m.client_id = 1 AND (mm.menuid = 0 OR mm.menuid <= 0) ORDER BY m.position, m.ordering
Table 'praha604_bd.lamp_extensions' doesn't exist SQL=SELECT folder AS type, element AS name, params FROM lamp_extensions WHERE enabled >= 1 AND type ='plugin' AND state >= 0 AND access IN (1) ORDER BY ordering

Версия Joomla! 1.7 - Open Source Content Management

Подскажите, пожалуйста, где и как их исправить ошибки, чтобы сайт нормально запустился?