Did you make the modifications in the create account page as per the installation instructions for v1.24?

If not using Easy Sign-Up and Login v1.18b+, please perform the following extra step in includes/modules/YOUR_TEMPLATE/create_account.php:

Find:

PHP Code:
$address_id = $db->Insert_ID(); 
Add After:

PHP Code:
// FEC MODIFICATION
$_SESSION['sendto'] = $_SESSION['customer_default_address_id'] = (int)$address_id;