no implicit conversion of nil into String about vagrant-vsphere

[vralfy]

it seems that proxy_host is not optional .. if I set it to '' i get this
ERROR vagrant: /home/nspecht/.vagrant.d/gems/gems/vagrant-vsphere-0.10.0/lib/vSphere/action/connect_vsphere.rb:23:in rescue in call' /home/nspecht/.vagrant.d/gems/gems/vagrant-vsphere-0.10.0/lib/vSphere/action/connect_vsphere.rb:14:incall'
/opt/vagrant/embedded/gems/gems/vagrant-1.6.3/lib/vagrant/action/warden.rb:34:in call' /opt/vagrant/embedded/gems/gems/vagrant-1.6.3/lib/vagrant/action/builtin/config_validate.rb:25:incall'
/opt/vagrant/embedded/gems/gems/vagrant-1.6.3/lib/vagrant/action/warden.rb:34:in call' /opt/vagrant/embedded/gems/gems/vagrant-1.6.3/lib/vagrant/action/builder.rb:116:incall'
/opt/vagrant/embedded/gems/gems/vagrant-1.6.3/lib/vagrant/action/runner.rb:66:in block in run' /opt/vagrant/embedded/gems/gems/vagrant-1.6.3/lib/vagrant/util/busy.rb:19:inbusy'
/opt/vagrant/embedded/gems/gems/vagrant-1.6.3/lib/vagrant/action/runner.rb:66:in run' /opt/vagrant/embedded/gems/gems/vagrant-1.6.3/lib/vagrant/machine.rb:196:inaction_raw'
/opt/vagrant/embedded/gems/gems/vagrant-1.6.3/lib/vagrant/machine.rb:173:in block in action' /opt/vagrant/embedded/gems/gems/vagrant-1.6.3/lib/vagrant/environment.rb:434:inlock'
/opt/vagrant/embedded/gems/gems/vagrant-1.6.3/lib/vagrant/machine.rb:161:in call' /opt/vagrant/embedded/gems/gems/vagrant-1.6.3/lib/vagrant/machine.rb:161:inaction'
/opt/vagrant/embedded/gems/gems/vagrant-1.6.3/lib/vagrant/batch_action.rb:82:in `block (2 levels) in run'
INFO interface: error: Connection refused - connect(2)
Connection refused - connect(2)
INFO interface: Machine: error-exit ["VagrantPlugins::VSphere::Errors::VSphereError", "Connection refused - connect(2)"]

[rylarson]

Can you post a redacted Vagrantfile that reproduces this error? I think the proxy_host thing is a red herring.