Error building Admin Menus.

Hi ,
I purchase this component but it is not installed properly. It is showing this error,
Error
exception 'UnexpectedValueException' with message 'JTableMenu::_getNode(1, ) failed.' in /home/apache_com_au/apache.com.au/libraries/joomla/table/nested.php:1428 Stack trace: #0 /home/apache_com_au/apache.com.au/libraries/joomla/table/nested.php(749): JTableNested->_getNode(1) #1 /home/apache_com_au/apache.com.au/libraries/legacy/table/menu.php(183): JTableNested->store(false) #2 /home/apache_com_au/apache.com.au/libraries/joomla/installer/adapters/component.php(1268): JTableMenu->store() #3 /home/apache_com_au/apache.com.au/libraries/joomla/installer/adapters/component.php(836): JInstallerComponent->_buildAdminMenus('756') #4 /home/apache_com_au/apache.com.au/libraries/joomla/installer/adapters/component.php(232): JInstallerComponent->update() #5 /home/apache_com_au/apache.com.au/libraries/joomla/installer/installer.php(445): JInstallerComponent->install() #6 /home/apache_com_au/apache.com.au/administrator/components/com_installer/models/install.php(106): JInstaller->install('/home/apache_co...') #7 /home/apache_com_au/apache.com.au/administrator/components/com_installer/controllers/install.php(30): InstallerModelInstall->install() #8 /home/apache_com_au/apache.com.au/libraries/legacy/controller/legacy.php(722): InstallerControllerInstall->install() #9 /home/apache_com_au/apache.com.au/administrator/components/com_installer/installer.php(18): JControllerLegacy->execute('install') #10 /home/apache_com_au/apache.com.au/libraries/legacy/component/helper.php(359): require_once('/home/apache_co...') #11 /home/apache_com_au/apache.com.au/libraries/legacy/component/helper.php(339): JComponentHelper::executeComponent('/home/apache_co...') #12 /home/apache_com_au/apache.com.au/administrator/includes/application.php(158): JComponentHelper::renderComponent('com_installer') #13 /home/apache_com_au/apache.com.au/administrator/index.php(54): JAdministrator->dispatch() #14 {main}
×
Warning

Error building Admin Menus
website :-
Thanks,
Richard