Vagrant box could not be found or could not be accessed in the remote catalog - incompatible curl version

I just downloaded Vagrant and did the settings as well as install virtual box. I just can't start my project (vagrant up). I have a vagrant file and so on. What can I do?

$ vagrant up
Bringing machine 'default' up with 'virtualbox' provider...
==> default: Box 'scotch/box' could not be found. Attempting to find and install
...
    default: Box Provider: virtualbox
    default: Box Version: >= 0
The box 'scotch/box' could not be found or
could not be accessed in the remote catalog. If this is a private
box on HashiCorp's Atlas, please verify you're logged in via
`vagrant login`. Also, please double-check the name. The expanded
URL and error message are shown below:

URL: ["https://atlas.hashicorp.com/scotch/box"] 

There seems to be an issue with vagrant 1.8.7 and the embedded curl version vs the mac os binary (shipped by default on mac os Sierra and others) - remove the embedded one

sudo rm /opt/vagrant/embedded/bin/curl

Note: you also need to remove the embedded curl when you add a vagrant box (remotely or locally) so if you get the same error when running vagrant box add .... just remove the curl from vagrant and it will work

Just wanted to update this post. I ran into this error running macOS Sierra and a fresh Vagrant 1.8.7 install and noticed Vagrant just updated. As of Vagrant 1.9.0 this error appears to have been fixed.