In the case of both of the tickets that have been started in thread, the cause of the problem was either Browser Caching, or files form the /js folder not being uploaded.
Try clearing your browsers cache and make sure that all of the files in the /js folder are uploaded to the server.
another thing to try is to edit the WA_SecurityAssist/Helper_PHP.php file.
Change:
if (!isset($_SESSION)) {
session_start();
}
to:
@session_start();