Some thing in the server configuration must have changed to cause it to stop working.
first thing to check is the servers session management, use the session test page from the following thread to make sure the server can maintain session state:
showpost.php?p=23826&postcount=2
if the session test fails, it is most likely a bad session.save_path in the php.ini, you will need to contact the host to have them correct the problem.
another thing to try is to change the following code in the WA_SecurityAssist/helper_PHP.php file:
php:
if (!isset($_SESSION)) {
session_start();
}
to:
php:
@session_start();
