Single Logout

First, thank you for this module. It will really help us to connect some to Facebook users.

Initial login/registration and afterward authentication works fine but for a user case described below:

User click on facebook login on site; it redirects to Facebook login; user enters facebook user name & password; user gets authenticated to site. But in case, user log out from facebook and try to login again to Drupal site again; its gives following error

Fatal error: Uncaught exception 'FacebookRestClientException' with message 'Session key invalid or no longer valid' in /*****/all/modules/facebook_auth/facebook-platform/client/facebookapi_php5_restlib.php:1673 Stack trace: #0 /*****/all/modules/facebook_auth/facebook-platform/client/facebookapi_php5_restlib.php(606): FacebookRestClient->call_method('facebook.users....', Array) #1 /****/all/modules/facebook_auth/facebook_auth.module(92): FacebookRestClient->users_getInfo('1318716788', Array) #2 [internal function]: facebook_auth() #3 /*****/includes/menu.inc(348): call_user_func_array('facebook_auth', Array) #4 /******/index.php(18): menu_execute_active_handler() #5 {main} thrown in /*****/all/modules/facebook_auth/facebook-platform/client/facebookapi_php5_restlib.php on line 1673

Thanks,
=gk