Quote Originally Posted by schoolboy View Post
Checkout Loop...

I have updated the files to 1.11 but my customers keep getting redirected back to checkout with the following alert:

Your order's details have changed. Please review the current values and re-submit.

Do you need details of my shipping settings?

One-page checkout is therefore currently "off" - and transactions now go through on traditional checkout system.
Problem goes away after rolling back to OPC ver 1.10