wp-login.php error

Running v1.7.12 of Async JS and CSS. At login/logout, receive multiple lines with this error:

Warning: Invalid argument supplied for foreach() in /home/content/99/11003899/html/wp-content/plugins/async-js-and-css/functions.php on line 329

http://ww.wp.xz.cn/plugins/async-js-and-css/