Doesn't work if securesite is enabled

confirmed.

1. if you view page source you'll notice securesite is not emitting CSS files at all.
You can fix this for openid_selector by copying secure-page.tpl.php to your theme directory and inserting

<link type="text/css" rel="stylesheet" media="all" href="<?php print $base_path . drupal_get_path('module', 'openid_selector') .'/openid_selector.css' ?>" />
<link type="text/css" rel="stylesheet" media="all" href="<?php print $base_path . libraries_get_path('openid-selector') .'/css/openid.css' ?>" />

near line 19
For more information read http://drupal.org/node/385896

2. I think securesite is conflicting w/ core OpenID module:
disable OpenID Selector and paste https://www.google.com/accounts/o8/id or http://me.yahoo.com/ into Drupal's default OpenID URL text box ==> securesite somehow screws core OpenID login process.

Either way, OpenID Selector functions just fine.