This is the error message with the error reporting turned on like you asked:
Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /home/content/p/e/t/petermcdonald/html/index.php:5) in /home/content/p/e/t/petermcdonald/html/WA_ValidationToolkit/WAVT_ValidatedForm_PHP.php on line 3