windows_2012_r2_core.json Produces Vagrant hang on "Waiting for the VM to finish booting" about packer-windows HOT 6 CLOSED

[~/vagranttest]$ vagrant up
Bringing machine 'default' up with 'virtualbox' provider...
==> default: Importing base box 'windows2012r2core'...
==> default: Matching MAC address for NAT networking...
==> default: Setting the name of the VM: vagranttest_default_1454982592899_22637
==> default: Clearing any previously set network interfaces...
==> default: Preparing network interfaces based on configuration...
    default: Adapter 1: nat
==> default: Forwarding ports...
    default: 3389 (guest) => 3389 (host) (adapter 1)
    default: 22 (guest) => 2222 (host) (adapter 1)
    default: 5985 (guest) => 55985 (host) (adapter 1)
    default: 5986 (guest) => 55986 (host) (adapter 1)
==> default: Running 'pre-boot' VM customizations...
==> default: Booting VM...
==> default: Waiting for machine to boot. This may take a few minutes...
    default: WinRM address: 127.0.0.1:55985
    default: WinRM username: vagrant
    default: WinRM execution_time_limit: PT2H
    default: WinRM transport: plaintext
==> default: Machine booted and ready!
==> default: Checking for guest additions in VM...
==> default: Mounting shared folders...
    default: /vagrant => /Users/sneal/vagranttest
==> default: Running provisioner: shell...
    default: Running: inline PowerShell script
==> default: Hello, World