Please review 2.0.15 Fb New User sign-in process to allow sign-in completion. I've reverted to 2.014 installation. The issue appears to be where the account is being created. Below are the steps for the 2.0.14 installation, which is working and what I thing is occurring with the 2.0.15 process:
2.0.14
New user selects "Sign in with Facebook"
New user selects "Create My Account"
User selects profile type from available profile options
User clicks "Complete Registration"
User is signed in and taken to home page as expected.
2.0.15 Issue
New user selects "Sign in with Facebook"
New user selects "Create My Account"
(appears the account is now being created after this step)
User selects profile type from available profile options
User clicks "Complete Registration"
(registration fails - appears an account with user id already exists
Thanks for your help.