It looks like something wasn't applied right this time when you ran through Form Builder. Try removing the form completely and re-applying it to the page. The 3 if statements at around line 422 should be similar (not exactly the same) as this:
if (ValidatedField('untitled1','untitled1')) {
if ((strpos((",".ValidatedField("untitled1","untitled1").","), "," . "1" . ",") !== false || "1" == "")) {
if (!(false)) {
Instead, your form was applied without the if statement check like this:
if (ValidatedField('register','register')) {
if () {
if (!(false)) {
