Do you have $config['boards'] set up in inc/instance-config.php? The navbar looks lacking.
Here's how it's set here for example (though I can't remember if the 'home' => '/' part is something upstream Tinyboard will support).
$config['boards'] = array(
array('home' => '/'),
array('pony', 'oat', 'anon'),
array('fic', 'rp', 'art'),