--- role_change_notify.module	2010-03-14 16:43:42.000000000 +0100
+++ role_change_notify.module	2010-09-28 17:14:41.000000000 +0200
@@ -348,7 +348,7 @@ function role_change_notify_token_values
     if (module_exists('profile')) {
       $keys = array_keys(get_object_vars($account));
       foreach($keys as $key) {
-        if(strpos($key, 'profile_') === 0) {
+        if(strpos($key, 'profile_') === 0 && !empty($account->$key) && !is_array($account->$key)) {
           $tokens[$key] = check_plain($account->$key);
         }
       }