This issue only seems to occur with Guest Checkout. Your change to line 2080 of \includes\classes\OnePageCheckout.php does the trick.

Quote Originally Posted by carlwhat View Post
you might be able to change line 2080 to:

PHP Code:
'PAYMENTREQUEST_0_SHIPTOSTATE' => zen_get_zone_code($temp_address['country']['id'], (int)$temp_address['zone_id'], $temp_address['state']),