I'm not sure what's including it, but there definitely is another inclusion. The code is right after your body tag and looks like:
<body id="bd" class="homepage com_content view-category green rtl el_marada fs4 left-main-right ">
<div id='fb-root'></div><script type='text/javascript'>
// Load the SDK Asynchronously
(function(d){
var js, id = 'facebook-jssdk'; if (d.getElementById(id)) {return;}
js = d.createElement('script'); js.id = id; js.async = true;
js.src = '//connect.facebook.net/ar_AA/all.js';
d.getElementsByTagName('head')[0].appendChild(js);
}(document));
</script><div id="fb-root"></div>
<script type="text/javascript">
window.fbAsyncInit = function() {
FB.init({appId: '241860785861926', status: false, cookie: true, xfbml: false});
FB.Event.subscribe('comment.create', jfbc.social.comment.create);
FB.Event.subscribe('edge.create', jfbc.social.like.create);
jfbc.social.googleAnalytics.trackFacebook();
};
(function(d, s, id){
var js, fjs = d.getElementsByTagName(s)[0];
if (d.getElementById(id)) {return;}
js = d.createElement(s); js.id = id;
js.src = "//connect.facebook.net/ar_AR/all.js";
fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));
</script>The first block that starts with "// Load the SDK Asynchronously" is coming from the other extension. It's loading the FB Javascript library and not including an appId, which could cause problems for JFBConnect since we require the AppId to be properly loaded.
If you're using sh404SEF, look to see if you have a "Social Buttons" plugin (or something like that) enabled in the system group. If not, look for any other social plugins in there that may be causing it and test what happens when disabled.
I hope that helps get you going.
Thanks,
Alex