Shipping and billing information in custom page.

Hi,

I have try to implement a new custom page with customer profile data for update shipping/billing information.

I have added both fields using following code, but I got "An illegal choice has been detected. Please contact the site administrator." on country change:

(hook_menu with "drupal_get_form")

  $order = commerce_order_load($order_id);
  $form['customer']['add_customer_shipping'] = array(
    '#type' => 'container',
    '#prefix' => '<div class="main-add-1"><h3>Billing Details</h3>',
    '#suffix' => '</div>'    
  );
  $form['customer']['add_customer_billing'] = array(
    '#type' => 'container',
    '#prefix' => '<div class="main-add-2"><h3>Shipping Details</h3>',
    '#suffix' => '</div>'
  );
  
  $form_state['build_info']['files']['form'] = drupal_get_path('module', 'commerce_customer') . '/includes/commerce_customer_profile.forms.inc';
  if (isset($order->commerce_customer_shipping)&& !empty( $order->commerce_customer_shipping)) { 
    $profile_id = $order->commerce_customer_shipping['und'][0]['profile_id'];
    $profile = commerce_customer_profile_load($profile_id);
  } else {
    $profile = commerce_customer_profile_new('billing', 0);
  }
  // Ensure the owner name is accessible if the uid is set.
  if (!empty($profile->uid) && $owner = user_load($profile->uid)) {
    $profile->name = $owner->name;
  }
  if (empty($profile->created)) {
    $profile->date = format_date(REQUEST_TIME, 'custom', 'Y-m-d H:i:s O');
  }
  $form_state['customer_profile'] = $profile;
  field_attach_form('commerce_customer_profile', $profile, $form['customer']['add_customer_shipping'], $form_state);
  
  
  if (isset($order->commerce_customer_billing) && !empty($order->commerce_customer_billing)) { 
    $profile_id = $order->commerce_customer_billing['und'][0]['profile_id'];
    $profile = commerce_customer_profile_load($profile_id);
  } else {
    $profile = commerce_customer_profile_new('shipping', 0);
  }
  
  // Ensure the owner name is accessible if the uid is set.
  if (!empty($profile->uid) && $owner = user_load($profile->uid)) {
    $profile->name = $owner->name;
  }
  if (empty($profile->created)) {
    $profile->date = format_date(REQUEST_TIME, 'custom', 'Y-m-d H:i:s O');
  }
  $form_state['customer_profile'] = $profile;
  field_attach_form('commerce_customer_profile', $profile, $form['customer']['add_customer_billing'], $form_state);
  $form['customer']['account'] = array(
    '#type' => 'checkbox', 
    '#prefix' => '<div style="clear:both;"></div>',
    '#title' => t('Create an account?'),
  );
  $form['customer']['add_customer'] = array(
      '#type' => 'button',
      '#value' => t('Create new customer'),
      '#attributes' => array(
        'class' => array('transaction-btn'),
      ),
      '#ajax' => array(
        'callback' => 'commerce_order_user_js',
        'wrapper' => 'order-user-wrapper',
        'effect' => 'slide',
      ),
      '#element_key' => 'add-order-customer',
   );
  return $form;

please let me know what is incorrect when we change the country field its return "An illegal choice has been detected. Please contact the site administrator.".