First, I am using the new 2CO with IPN module: http://www.oscommerce.com/community/contributions,6910
I have my cookies set to Force Cookies and am 99% sure my configuration for SSL and cookies is correct.
In IE7+ when I complete a 2CO order It takes me back to my site, but i get a Cookie Usage error. I can assure you cookies are enabled.
In FireFox with I complete an order it stays at the 2CO site.
Is there anything you need me to provide to help answer the question? I am not sure what to do.
the URL to the site is http://www.onnabeads.com I have the 2CO stuff setup for testing right now.
Daniel