I have installed composer v1.4 several times each time I try run composer global require "laraval/installer" I get this response Teranchezs-MacBook-Pro:~ terror$ composer global require laravel/installer Changed current directory to /Users/terror/.composer [Composer\Downloader\TransportException] Content-Length mismatch require [--dev] [--prefer-source] [--prefer-dist] [--no-progress] [--no-suggest] [--no-update] [--no-scripts] [--update-no-dev] [--update-with-dependencies] [--ignore-platform-reqs] [--prefer-stable] [--prefer-lowest] [--sort-packages] [-o|--optimize-autoloader] [-a|--classmap-authoritative] [--apcu-autoloader] [--] [<packages>]... I have been searching the google but alas I have found no way around this please assist