Facebook Login + BP-social theme - rendering in IE, Safari

So I'm trying out the plugin WP-FB-AutoConnect on my site (http://libertydiscussions.com). I've got a "Login with Facebook" button in my sidebar. Everything works great in Firefox, but in IE and Safari the button doesn't appear in posts or on the homepage (though it does appear on pages).

This plugin uses some javascript. I'm hoping someone can help diagnose the problem and suggest a fix I can use in the BP-Social theme.

I'm using:
WPMU 2.9.2
Buddypress 1.2.3
BP-Social 1.1.8

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