When I try to vagrant up, they say I can't access the remote catalog.

The reason for this problem is that the version of curl bundled with Issue in vagrant 1.8.7 conflicts with OSX.

 sudorm/opt/vagrant/embedded/bin/curl

Remove the curl enclosed in .

https://stackoverflow.com/questions/40473943/vagrant-box-could-not-be-found-or-could-not-be-accessed-in-the-remote-catalog