Couldn't add product to the cart from cached pages.

If you cannot add the product to the cart from the cached pages, but from the uncached pages yes, then make sure that you are using correct Magento version. M-turbo supports Magento CE 1.3 to 1.7. If you are using Magento CE 1.8 or higher you need to prevent "form key" protection introduced to these version. You can do it by using our module Magento Form Key that you can download here for free.