Using Atelier after upgrading a pre-2016.2 instance to 2016.2

Does the Caché installer do all of the necessary setup for using Atelier when upgrading a pre-Atelier instance?

I just upgraded an Ensemble 2016.1 instance to 2016.2 and the /api/atelier web application wasn't created automatically. Aside from creating this web application is there anything else that needs to be done to support Atelier?

** UPDATE **
See my comment below -- this was caused by a permissions problem during the upgrade. After fixing the permissions problem and upgrading again Atelier works.