PredictionIO - undefined method `configure' for Vagrant:Module

I’m dying to play with PredictionIO and it looks like the easiest way to get up and running is using the wonderful vagrant to spin up a preconfigured VirtualBox VM. Unfortunately, I got the following error message when attempting to do so in Windows or Mac OSX. 

C:/PredictionIO-Vagrant/Vagrantfile:10:in `<top (required)>': undefined method `configure' for Vagrant:Module (NoMethodE
rror)

It turns out that that Vagrant no longer supports RubyGems as an installation method (a whole blog post was dedicated to the reasoning) and I had used gem install to get her up and running. So, remove Vagrant if you’ve already installed it and download the installer from http://www.vagrantup.com/

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