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Vanilla 2.5 - the stable gold release - can now be downloaded. The upgrade instructions are in the README.md as part of the download. This release brings a completely revised Dashboard, a native RESTful API, "flat" categories, IPv6 support, enhanced security, and hundreds of bug fixes. Details in the pre-release discussion.
/applications/vanilla/controllers/class.settingscontroller.php, then follow the normal upgrade process, including running /utility/update.
/cachefolder after upgrading, and again if you experience issues after the upgrade.
IF YOU HAVE TROUBLE UPGRADING AND NEED ASSISTANCE, PLEASE START A NEW DISCUSSION. If you are a developer and locate a reproducible issue, please file it on our GitHub tracker, noting your version as 2.5. We greatly appreciate the assistance.
Please upgrade to 2.5 as soon as possible.