I made a custom theme based on Zen. In my custom theme (and under stock Zen theme as well) there is a problem with enabling my search form. When I tick the checkbox that says "search" box under admin>theme>customtheme>config>Toggle Box and click save, the page refreshes and I notice that the checkbox at "search box" is unticked again. Obviously this results in me not being able to show the search form.
Here's the code from my page.tpl.php file.
<?php if ($search_box || $primary_links || $secondary_links || $navbar): ?> <div id="navbar"><div id="navbar-inner" class="clear-block region region-navbar"> <a name="navigation" id="navigation"></a> <?php if ($search_box): ?> <div id="search-box"> <?php print $search_box; ?> </div> <!-- /#search-box --> <?php endif; ?>