Magento – Product Custom Option “File Upload” not working

I don't know exactly how you can solve this but I can explain the problem, maybe it helps.

I see that the product page is on https but when you click on the add to cart button the form is submitted to http://francesandalbert.com/checkout/cart/add/uenc/aHR0cDovL2ZyYW5jZXNhbmRhbGJlcnQuY29tL3JpbmcuaHRtbD9fX19TSUQ9VQ,,/product/172/. Notice the http.

Then that pages does a 301 redirect to https://{same url} and what you send by post (the ring size) is lost.

If I use firebug and change the form url to https I can add the product to the cart without any problems.

You can try to change the submit url of the form Mage_Catalog_Block_Product_Abstract::getSubmitUrl or you can set the unsecure base url of your website to https://... avoiding 301 redirects from htaccess.

These are just my suggestions. I have no idea if they will work.

You can follow:

$cart = Mage::getSingleton('checkout/cart');
$cart->init();

$product = Mage::getModel('catalog/product')->load(1112);

$paramater = array('product' => '1112',
                    'qty' => '12',
                    'form_key' => Mage::getSingleton('core/session')->getFormKey(),
                    'options' => array('option_id'=>'sub_option_id')
            );       

$request = new Varien_Object();
$request->setData($paramater);
$cart->addProduct($product, $request);
$cart->save();

If custom option is not required for this product that time this code will use. Otherwise, you change the base file of magento