I have been searching up and down the internet including the plugin website and left several threads on this but no answer so far. Then I found this: http://wordpress.org/support/topic/319415?replies=4#post-1276968
This thread describes my issue exactly but the thread seems to be dead.
Has anybody else had issues with the WP Commerce shopping cart after moving a site? If so, did you find a solution and what?
Any help is greatly appreciated as my client was expecting this site to be live today.