Index: inc/wpseo-non-ajax-functions.php
===================================================================
--- inc/wpseo-non-ajax-functions.php    (revision 505496)
+++ inc/wpseo-non-ajax-functions.php    (working copy)
@@ -2,24 +2,25 @@

 function wpseo_load_plugins( $path ) {
    $allowed_plugins = array('wpseo-local', 'wpseo-video', 'wpseo-news');
-
-   $dir = @opendir( $path );
-   if ($dir) {
-       while (($entry = @readdir($dir)) !== false) {
-           $full_dir_path = $path . "/" . $entry;
-           if( in_array($entry, $allowed_plugins) && is_readable($full_dir_path) && is_dir($full_dir_path) ) {
-               $module_dir = @opendir( $full_dir_path );
-               if ($module_dir) {
-                   while (($module_entry = @readdir($module_dir)) !== false) {
-                       if (strrchr($module_entry, '.') === '.php') {
-                           require $full_dir_path . '/' . $module_entry;
+   if (is_dir($path)) {
+       $dir = @opendir( $path );
+       if ($dir) {
+           while (($entry = @readdir($dir)) !== false) {
+               $full_dir_path = $path . "/" . $entry;
+               if( in_array($entry, $allowed_plugins) && is_readable($full_dir_path) && is_dir($full_dir_path) ) {
+                   $module_dir = @opendir( $full_dir_path );
+                   if ($module_dir) {
+                       while (($module_entry = @readdir($module_dir)) !== false) {
+                           if (strrchr($module_entry, '.') === '.php') {
+                               require $full_dir_path . '/' . $module_entry;
+                           }
                        }
                    }
                }
            }
+           @closedir($dir);
        }
-       @closedir($dir);
-   }
+   }
 }

 function wpseo_get_country($country_code) {