Hi Jannick
Thanks for the help. It was the first time running vagrant up and I did do exactly as you suggested. However, I think the problem was caused by a broken copy of ansible. I uninstalled and reran vagrant up.
I then ran into this problem: Vagrant only syncs folders, no files. I managed to solve by creating a new folder at /Users/me/Development and provisioning the site in the new directory. Seems to be an issue with the new Documents folder.
Liam