I am running J1.7.0 and CB 1.7RC and almost everything seems to be working just great, with the exception of one custom field that generates the age from date of birth.
In the backend everything looks OK to me.
While viewing the profile everything is still good.
But when editing the profile it does not show an editable field, but just the following line:
type = "hidden">
It may be easily overcome by replacing the field with a new one, but that might break the connection the the already filled in column in the database.
A pdf with a screenshot is attached with this post.