The error checker is failing because when someone goes to the home page, they are redirected to /index.php?lang=en That's normal if you have a language manager extension installed. We're hoping to allow the error checker tool to follow redirects later this year.
There are a few issues I can see on your page that would need to be corrected:
* It seems like you set some custom permissions in the Facebook API configuration area that are incorrect. The permissions being requested are:
email,$jfbcLibrary = JFBConnectFacebookLibrary::getInstance();,,$friends = $jfbcLibrary->api('/me/friends?fields=id,name,link,picture');,$friends = $friends['data']That 'code' in there isn't valid and should be removed. I'd leave that setting blank for now.
* You have another Facebook extension on your site adding the Like button and re-including the Facebook Javascript library. You should prevent that reloading of the Javascript library or disable the other extension. A div around the like button is "cmp_buttons_container" which may help you narrow down what extension it is.
That's what the error checker would have told you as well. I hope that helps get you going.
Thanks,
Alex