In spite of our NEW Ajax Mode feature there could be a one off case where Ajax Mode doesn't seem to fit well with a particular theme, it will have to be disabled in the interim until our development team gets it patched ASAP!
How to Disable
To disable these cart types and change your cart type, please go to "Customize theme", then under "Cart Page" (or a similar section), change "Cart type" to "Page". Whenever we can confirm Ajax Mode is working properly with your theme, you're free to revert this change at any time.