I have a problem when updating one of my sites from
126.96.36.199. All my other sites are working fine.
Once updated (tried via SSH, FTP and Magento Connect Downloader) the onepage checkout just redirects back to the cart page. It does this irrespective of whether Formkey is
Ive tried many fixes, including adding formkey code to older extensions. I've even uninstalled all the extensions (via Magento Connect Downloader) without luck.
How do I go about troubleshooting this, and finding the cause of the problem?
The site has been live since 2012, and perhaps there may be some legacy theme/plugin elements causing the issue?
Any help would be highly appreciated!