$ vagrant up
Installing the 'vagrant-env' plugin. This can take a few minutes...
Fetching: dotenv-deployment-0.0.2.gem (100%)
Fetching: dotenv-0.11.1.gem (100%)
Fetching: vagrant-env-0.0.3.gem (100%)
Installed the plugin 'vagrant-env (0.0.3)'!
Installing the 'vagrant-fsnotify' plugin. This can take a few minutes...
Fetching: vagrant-fsnotify-0.3.0.gem (100%)
Installed the plugin 'vagrant-fsnotify (0.3.0)'!
Bringing machine 'default' up with 'virtualbox' provider...
==> default: Box 'ampath' could not be found. Attempting to find and install...
    default: Box Provider: virtualbox
    default: Box Version: >= 0
==> default: Box file was not detected as metadata. Adding it directly...
==> default: Adding box 'ampath' (v0) for provider: virtualbox
    default: Unpacking necessary files from: file:///Users/bmamlin/Code/Playground/ampath-devbox/ampathDevBoxComplete.box
==> default: Successfully added box 'ampath' (v0) for 'virtualbox'!
/opt/vagrant/embedded/gems/2.1.5/gems/vagrant-2.1.5/plugins/kernel_v2/config/vm.rb:643:in `initialize': no implicit conversion of nil into String (TypeError)
	from /opt/vagrant/embedded/gems/2.1.5/gems/vagrant-2.1.5/plugins/kernel_v2/config/vm.rb:643:in `new'
	from /opt/vagrant/embedded/gems/2.1.5/gems/vagrant-2.1.5/plugins/kernel_v2/config/vm.rb:643:in `block in validate'
	from /opt/vagrant/embedded/gems/2.1.5/gems/vagrant-2.1.5/plugins/kernel_v2/config/vm.rb:638:in `each'
	from /opt/vagrant/embedded/gems/2.1.5/gems/vagrant-2.1.5/plugins/kernel_v2/config/vm.rb:638:in `validate'
	from /opt/vagrant/embedded/gems/2.1.5/gems/vagrant-2.1.5/lib/vagrant/config/v2/root.rb:70:in `block in validate'
	from /opt/vagrant/embedded/gems/2.1.5/gems/vagrant-2.1.5/lib/vagrant/config/v2/root.rb:66:in `each'
	from /opt/vagrant/embedded/gems/2.1.5/gems/vagrant-2.1.5/lib/vagrant/config/v2/root.rb:66:in `validate'
	from /opt/vagrant/embedded/gems/2.1.5/gems/vagrant-2.1.5/lib/vagrant/action/builtin/config_validate.rb:15:in `call'
	from /opt/vagrant/embedded/gems/2.1.5/gems/vagrant-2.1.5/lib/vagrant/action/warden.rb:34:in `call'
	from /opt/vagrant/embedded/gems/2.1.5/gems/vagrant-2.1.5/lib/vagrant/action/warden.rb:95:in `block in finalize_action'
	from /opt/vagrant/embedded/gems/2.1.5/gems/vagrant-2.1.5/lib/vagrant/action/warden.rb:34:in `call'
	from /opt/vagrant/embedded/gems/2.1.5/gems/vagrant-2.1.5/lib/vagrant/action/builtin/handle_box.rb:56:in `call'
	from /opt/vagrant/embedded/gems/2.1.5/gems/vagrant-2.1.5/lib/vagrant/action/warden.rb:34:in `call'
	from /opt/vagrant/embedded/gems/2.1.5/gems/vagrant-2.1.5/lib/vagrant/action/warden.rb:95:in `block in finalize_action'
	from /opt/vagrant/embedded/gems/2.1.5/gems/vagrant-2.1.5/lib/vagrant/action/warden.rb:34:in `call'
	from /opt/vagrant/embedded/gems/2.1.5/gems/vagrant-2.1.5/lib/vagrant/action/builder.rb:116:in `call'
	from /opt/vagrant/embedded/gems/2.1.5/gems/vagrant-2.1.5/lib/vagrant/action/runner.rb:66:in `block in run'
	from /opt/vagrant/embedded/gems/2.1.5/gems/vagrant-2.1.5/lib/vagrant/util/busy.rb:19:in `busy'
	from /opt/vagrant/embedded/gems/2.1.5/gems/vagrant-2.1.5/lib/vagrant/action/runner.rb:66:in `run'
	from /opt/vagrant/embedded/gems/2.1.5/gems/vagrant-2.1.5/lib/vagrant/action/builtin/call.rb:53:in `call'
	from /opt/vagrant/embedded/gems/2.1.5/gems/vagrant-2.1.5/lib/vagrant/action/warden.rb:34:in `call'
	from /opt/vagrant/embedded/gems/2.1.5/gems/vagrant-2.1.5/plugins/providers/virtualbox/action/check_virtualbox.rb:26:in `call'
	from /opt/vagrant/embedded/gems/2.1.5/gems/vagrant-2.1.5/lib/vagrant/action/warden.rb:34:in `call'
	from /opt/vagrant/embedded/gems/2.1.5/gems/vagrant-2.1.5/lib/vagrant/action/builder.rb:116:in `call'
	from /opt/vagrant/embedded/gems/2.1.5/gems/vagrant-2.1.5/lib/vagrant/action/runner.rb:66:in `block in run'
	from /opt/vagrant/embedded/gems/2.1.5/gems/vagrant-2.1.5/lib/vagrant/util/busy.rb:19:in `busy'
	from /opt/vagrant/embedded/gems/2.1.5/gems/vagrant-2.1.5/lib/vagrant/action/runner.rb:66:in `run'
	from /opt/vagrant/embedded/gems/2.1.5/gems/vagrant-2.1.5/lib/vagrant/machine.rb:239:in `action_raw'
	from /opt/vagrant/embedded/gems/2.1.5/gems/vagrant-2.1.5/lib/vagrant/machine.rb:208:in `block in action'
	from /opt/vagrant/embedded/gems/2.1.5/gems/vagrant-2.1.5/lib/vagrant/environment.rb:614:in `lock'
	from /opt/vagrant/embedded/gems/2.1.5/gems/vagrant-2.1.5/lib/vagrant/machine.rb:194:in `call'
	from /opt/vagrant/embedded/gems/2.1.5/gems/vagrant-2.1.5/lib/vagrant/machine.rb:194:in `action'
	from /opt/vagrant/embedded/gems/2.1.5/gems/vagrant-2.1.5/lib/vagrant/batch_action.rb:82:in `block (2 levels) in run'