I'm using latest Stream 1.2.1, and just installed Clef plugin (http://wordpress.org/plugins/wpclef/). When I try to login with Clef the redirect fails and get error:
Warning: Missing argument 2 for WP_Stream_Connector_Users::callback_wp_login() in /wp-content/plugins/stream/connectors/users.php on line 251
Warning: Cannot modify header information - headers already sent by (output started at /wp-content/plugins/stream/connectors/users.php:251) in /home/drcep3nc/public_html/wp-includes/pluggable.php on line 896
I'm pretty sure this is an issue with Stream, and not Clef based on the error output.