Package listed in MELPA, but not found in package install

Question

I am currently trying to install ENSIME for emacs 24.3.1 following the instructions at https://github.com/ensime/ensime-emacs under the quick start; I've added

    (require 'package)     (add-to-list 'package-archives              '("melpa" . "http://melpa.milkbox.net/packages/") t)     (package-initialize)  (when (not package-archive-contents)   (package-refresh-contents)) 

to my .emacs file, as instructed. However, when I restart and do M-x package install [RETURN]ensime[RETURN], it returns [No Match] and indeed, I can't find it when I list the packages. However, I can easily find it at http://melpa.milkbox.net/#; what would be causing the discrepancy between what is available through the website and when can be installed from emacs?

Any help is much appreciated; Thank you!

Answer 1

I had to run M-x package-refresh-contents. Once I did that, the files were found.

Here's what my .emacs looks like:

(cond  ((>= 24 emacs-major-version)   (require 'package)   (package-initialize)   (add-to-list 'package-archives            '("melpa-stable" . "http://stable.melpa.org/packages/") t)   (package-refresh-contents)  ) )