Error starting Vagrant on Mac OS 10.11.5

[skyler]

~/work/RedisMock (getset)> cp Vagrantfile.dist Vagrantfile
~/work/RedisMock (getset)> vagrant up
Bringing machine 'default' up with 'virtualbox' provider...
==> default: Box 'xotelia' 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 'xotelia' (v0) for provider: virtualbox
    default: Downloading: https://www.dropbox.com/s/mp2h1c8rlbom2sr/xotelia.box?dl=1
The box failed to unpackage properly. Please verify that the box
file you're trying to add is not corrupted and try again. The
output from attempting to unpackage (if any):

bsdtar: Error opening archive: Unrecognized archive format

~/work/RedisMock (getset)> vagrant --version
Vagrant 1.8.1

[skyler]

Upgraded to latest Vagrant and the issue persists.

~/work/RedisMock (getset)> vagrant --version
Vagrant 1.8.5