I recently upgraded a test site with Magento 1.7. At this point, the admin side seems to be working and most of the front end seems to be working. The only issue I have is that I’m getting an error 404 page not found when I try to checkout. (https://upgrade.buyanyflag.com/index.php/checkout/onepage/) I changed the site from the current theme to the modern theme and default themes just to see if the issue was related to my theme and I still got the error.
I’m not getting anything helpful in any log files. I’ve rebuilt my indexes. I’ve cleared my cache.
I’ve been searching through these forums for hours trying to find a solution and nothing seems to be working.