Ubercart review order button redirects to cart page, does not allow checkout I am using Ubercart 3.3, Secure Pages latest dev, and Drupal 7.18.  

When I go to the site, login, and add a product to my cart all goes well.  I then go to the cart page which shows correctly and I click checkout.  It then redirects me to the checkout page where I fill in my information and choose paypal as my payment of choice.  When I'm all done I click review order at the bottom of the form and it redirects me back to the cart page instead of the review order page.  

To make matters worse, after that happens I can no longer get back to the checkout page, every time I click checkout it just redirects me back to the cart page.  

Some things i've checked:


User 0 is in the database
Clearing cache
Truncating the cache tables
Try a different product
Applied patches Secure Pages requires
Adding $conf['https'] = TRUE; at the bottom of my settings.php file
It actually turned out that I had a product in my cart that was no longer on the site, and my theme did not have the proper messages outputting.  I switched the theme back to Bartik and got a message saying there were products in my cart that were no longer available.