I am setting up a new Ubuntu system and needed to install Vagrant. Google, gave me this post that shows how to install Vagrant using apt. All seemed good until I ran Vagrant with Ansible and got this error:
ansible provisioner: * The following settings shouldn't exist: vault_password_file
Luckily, I remembered that vault is a somewhat new function in Ansible. I checked the Vagrant version and it was 1.4.3. That’s pretty old, so I installed the most recent version of Vagrant by following the instructions on the Vagrant site. When I was done, I was at 1.7.2 and the error went away.