Simple solution to fix the library connect issue

I'm afraid I already tried that. It's in sites/all/libraries/facebook-php-sdk/src, and the libraries module is installed. Thanks for trying.

I'm using Libraries API 7.x-2.0-alpha2+2-dev. I use the admin toolbar, and I use the flush all caches every time. Still no luck.

So far I've tried different versions of the SDK, all three versions of the libraries module (currently 7.x-2.0-alpha2), cleared the cache_libraries table, but still nothing. others have this working, so I know it does. What else could I be doing wrong? Could it have something to do bring a multi site?

I dug around the code, and made a test edit of fbconnect.module function _facebook_client_load_include(). I started by printing the variable $sdk_path. Every time it came out blank, so I commented out the else:

/**
 * Locates and loads the Facebook PHP SDK library.
 */
function _facebook_client_load_include() {
  if (!class_exists('Facebook')) {
    if (function_exists('libraries_load')) {
      $library = libraries_load('facebook-php-sdk');
 //   }
 //   else {
      $sdk_path = DRUPAL_ROOT . '/sites/all/libraries/facebook-php-sdk/src/facebook.php';
      $library = array('loaded' => file_exists($sdk_path));
      if ($library['loaded']) {
        require_once $sdk_path;
      }
    }
    if (!$library['loaded']) {
      watchdog('fbconnect', 'Unable to load the required Facebook library, please check the README.txt for instructions on how to resolve this.');
    }
  }
  return class_exists('Facebook') && defined('Facebook::VERSION');
}

The library loads perfectly if I leave the else statement commented out.

Thanks. The patch works here too.