[sv1cec]

Well, I started from scratch, checking everything.

First thing I checked my app ID in Facebook, and discovered that I had it set up to match the URL of my site, when I was testing it. That site was not accessible from the internet, without a password. Changed the URL and the FB Connect worked just fine.

It takes some testing and it is not very bug-free. For example, my og:image is 300x300 pixels and some times, when I test it in FB debugger, it still shows me that it is too small. Second, some times in FB debugger, I get some errors for circular errors, that I need to figure out, between http://www.mysite.com/forum.php and http://www.mysite.com/activity.php.

I also wanted to have the smallest (height-wise) buttons, so I changed the Facebook_likebutton template to:

<vb:if condition="$show['loadfbroot']">
<span id="fb-root"></span>
<script type="text/javascript" src="//connect.facebook.net/{vb:rawphrase facebook_language}/all.js#appId={vb:raw appid}&amp;xfbml=1"></script>
</vb:if>
<fb:like href="{vb:raw href}" font="tahoma" layout="button_count" share="true" show_faces="false" width="260" action="like" colorscheme="light"></fb:like>

Oh yes, one more thing to remember while testing is that you need to clear Facebook cookies from your computer, with every test you do. Otherwise, the stored cookies can play havoc with you. And be a little patient. When you hit the FB Connect button, things do not happen instantly, it takes a second or two before the login window appears (and darn it I am not on a slow machine, I have an iMac Intel Core 2 Duo at 2.66 GHz, with 8GB of RAM).

If you still have an issue, get back to me and I'll try to help you out.