Your base box isn't available to build from

[geckonz]

$ vagrant up
Bringing machine 'default' up with 'virtualbox' provider...
==> default: Box 'ubuntu-14-04-x64-virtualbox' 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 'ubuntu-14-04-x64-virtualbox' (v0) for provider: virtualbox
default: Downloading: ubuntu-14-04-x64-virtualbox
An error occurred while downloading the remote file. The error
message, if any, is reproduced below. Please fix this error and try
again.

Couldn't open file /Users/bwatkins/Documents/Projects/conjur/conjur-virtualbox/ubuntu-14-04-x64-virtualbox