Based on the error it looks like the require_once() reference for the webassist/security_assist/helper_php.php is either too low on the page or missing.
You can store the username in the session from the Authenticate User server behavior and then use the stored session variable to display it on the pages after login.
hi Ray thanks for the reply heres the copy of the userupdate? Also i stored the username in session how do i put on the page ? do i put on the template or on each indivual page, i failing to understand the applying to page concept sorry ?
thanks for your help so far..