I had some issues after updating to current version. In IE everything was fine but in Firefox, Chrome, Safarai on checkout I got message that there was no items in my cart. I read through all the various problems that people had and one of them suggested ticking the “Enable Alternate Redirection Method” box in the Advanced Settings page. I checked this out on my version and it was already ticked. Having gone through all other suggestions I unchecked this box and hey presto everything worked fine again. Hope this might help somebody from pulling too much hair out!!! M