Community Edition 1.9.3.1 addresses issues encountered by some merchants in our October 12 product releases. All merchants should either upgrade to Community Edition 1.9.3.1 or apply our latest patch, SUPEE-8788, to close several serious security vulnerabilities. More information is available in the release notes at: http://devdocs.magento.com/guides/m1x/ce19-ee114/ce1.9_release-notes.html#ce19-1931 