value="<?php echo $_SESSION['eCartCheckoutForm_cc_number']; ?>"
should be:
value="<?php echo(isset($_SESSION['eCartCheckoutForm_cc_number'])?$_SESSION['eCartCheckoutForm_cc_number']:""); ?>"
but i still think the problem is validation.
the validation will be on the confirm page, on the confirm page, look for the following code:
if ($WAFV_Errors != "") {
PostResult($WAFV_Redirect,$WAFV_Errors,"index");
}
and change it to:
if ($WAFV_Errors != "") {
die($WAFV_Errors);
PostResult($WAFV_Redirect,$WAFV_Errors,"index");
}
if validation is failing, it will write a comma separated list of of numbers to the page corresponding to the validations that failed.