tolerant 'base_url'

Go on your website 'example.net', log you out, and try to navigate in your embed gallery, everything work. Now, logged out, add before your website url, the famous 'www' ('www.example.net'). Does it work ? Can you see the thumbnail image in the gallery block? Try to access directly your embed gallery too, typing in 'www.example.net/gallery'

If no pictures appear, apply the fix bellow:

in your 'settings.php' replace
$base_url = 'http://example.com';
with

$base_url = 'http' . (isset($_SERVER['HTTPS']) ? $_SERVER['HTTPS'] == 'on' ? 's' : '' : '');
$base_url .= '://' .$_SERVER['HTTP_HOST'];
if ($dir = trim(dirname($_SERVER['SCRIPT_NAME']), '\,/')) {
  $base_url .= "/$dir";
}

which will define dynamically the base_url (see http://drupal.org/node/6554)

you could also auto-redirect www.example.com to example.com with MODRewrite (as drupal do)

it work with HTTPS server, if you apply this patch to gallery.module: http://drupal.org/node/31456

Damien