Index: facebook-platform/php4client/facebookapi_php4_restlib.php
===================================================================
--- facebook-platform/php4client/facebookapi_php4_restlib.php	(revision 47936)
+++ facebook-platform/php4client/facebookapi_php4_restlib.php	(working copy)
@@ -39,6 +39,7 @@
   var $api_key;
   var $facebook;
   var $error_code;
+  var $error_msg;
   var $friends_list; // to save making the friends.get api call, this will get prepopulated on canvas pages
   var $added;        // to save making the users.isAppAdded api call, this will get prepopulated on canvas pages
   var $call_as_apikey;
@@ -57,6 +58,7 @@
     $this->last_call_id = 0;
     $this->facebook     = &$facebook;
     $this->error_code   = 0;
+    $this->error_msg    = '';
     $this->call_as_apikey = '';
     $this->server_addr  = $this->facebook->get_facebook_url('api') . '/restserver.php';
     if (!empty($GLOBALS['facebook_config']['debug'])) {
@@ -1491,6 +1493,7 @@
 
   function call_method($method, $params) {
     $this->error_code = 0;
+    $this->error_msg = '';
 
     if ($this->call_as_apikey) {
       $params['call_as_apikey'] = $this->call_as_apikey;
@@ -1519,6 +1522,7 @@
     }
     if (is_array($result) && isset($result['error_code'])) {
       $this->error_code = $result['error_code'];
+      $this->error_msg = $result['error_msg'];
       return null;
     }
     return $result;