Replicating Rails App - ruby-on-rails

Question

I am trying to download a Rails app from github and that make it work on my PC. I have read other posts that say you have to run bundle install, rake db:create and then rake db:migrate, I do everything but when I try to run rake db:create I get this error:
rake aborted!
Gem::LoadError: You have already activated rake 10.4.2, but your Gemfile requires rake 10.3.2. Prepending `bundle exec` to your command may solve this.
D:/art-website/config/boot.rb:4:in `<top (required)>'
D:/art-website/config/application.rb:1:in `<top (required)>'
D:/art-website/Rakefile:4:in `<top (required)>'
LoadError: cannot load such file -- bundler/setup
D:/art-website/config/boot.rb:4:in `<top (required)>'
D:/art-website/config/application.rb:1:in `<top (required)>'
D:/art-website/Rakefile:4:in `<top (required)>'
(See full trace by running task with --trace)

Answer 1

The cause
Your gem rake has a conflicts in the version you have installed i.e. the gem rake your Gemfile requires is of version 10.3.2 while the gem you have on your machine has got version 10.4.2 and 10.3.2.
Solution
uninstall the gem of version 10.4.2. gem uninstall rake would ask you for the version that has to be uninstalled, please select 10.4.2
you may run the commands with bundle exec eg:- bundle exec rake db:migrate or bundle exec rake db:create
you may want to use RVM and use Gemsets as per the projects and its dependency gems. (I would personally prefer this way so that the projects of different version of gems would be clear and no need to worry about the conflicts gem versions)