Running the cart with SSL. After adding an item to the cart and then going to the cart any try to delete the item I get the error:
TECHNICAL ERROR: Unable to save update quantity
Details:
Error thrown: [object XMLHttpRequest]
Text status: error
If turn SSL off then it will delete the item in cart OK
Solutions
Edit /classes/FrontController.php line #87 (normally, you do not want to change any class file directly, but this is an exception as this will likely be fixed in 1.4.7.1 very soon).
Remove the following code :
else if (Configuration::get('PS_SSL_ENABLED') AND Tools::usingSecureMode() AND !($this->ssl))
{
header('HTTP/1.1 301 Moved Permanently');
header('Location: '.Tools::getShopDomain(true).$_SERVER['REQUEST_URI']);
exit();
}