I’ve seen and read this. Even posted at the bottom of the thread but this isn’t my issue.
The Relationships function is working fine in my site as in users can and have created Relationships with other members.
The problem We’re having is when the users go to the trouble of setting up all their family relationships (mutually in both directions).
if they then edit their Profile and set

“Visible to = Relationships” 

so in theory only family members can see your profile details... it doesn’t work!

everyone gets ”Access denied”