vagrant/machine.rb:153:in `action': wrong number of arguments (2 for 1) (ArgumentError)

Change the line from :

                  def action(name, **opts)

to:

                  def action(name, opts)

in the file located at /opt/vagrant/embedded/gems/gems/vagrant-1.7.1/lib/vagrant/machine.rb line 153.

This will be fixed in later versions of Vagrant after 1.7.1