No, they wouldn't work without the JFBCSystem plugin. There's a lot that plugin does to setup all features of our site.
With that said, there are a few things you could try that may work:
* The easiest is to simply add the App ID Secret key of Facebook into JFBConnect, if you haven't already. That may setup things to work in both extensions properly.
* If not, you can try editing the /components/com_jfbconnect/libraries/providers/facebook.php file. Around line 454, you'll see:
FB.init({{$appIdCode}{$status} cookie: true, xfbml: true, channelUrl: '{$channelurl}'});{$subs}{$resizeCode}Try putting // in front of that line, like:
// FB.init({{$appIdCode}{$status} cookie: true, xfbml: true, channelUrl: '{$channelurl}'});{$subs}{$resizeCode}That may fix things by not initializing the Facebook Javascript specific to JFBConnect.. but, may cause other issues, so test a lot and let us know.
If that doesn't help, let us know and we'll see what we can do.
Thanks,
Alex