Fatal error: Call to undefined function

Any attempt on my part to run friendselectric-6.x-1.x-dev. results in a fatal error:

This is the error:
Fatal error: Call to undefined function phptemplate_menu_primary_links() in
C:\wamp\www\drupal6\sites\all\Themes\friendselectric\page.tpl.php on line 27

This is line 27 of my page.tpl.php
$primary_links = phptemplate_menu_primary_links($primary_links);

Can anyone help me with this

Thanks