The WordPress Support Forum and WordPress Codex only provide support and documentation for officially released versions of WordPress, as downloaded from http://wordpress.org/download/ and only from http://wordpress.org/download/.
The only current officially supported version is WordPress 4.5.1. Previous major releases from 3.7 onwards may or may not get security updates as serious exploits are discovered.
If you use an un-released version of WordPress and experience trouble, your only official support option is the WordPress testers mailing list. If you are unable or unwilling to file bug reports, and help fix problems, please do not use anything other than the officially released versions.