I've had the same problem with the Relationship Calculator. I've contacted ancestry about it and am always give the response about disconnecting them from their family and then reconnecting them again. That doesn't work. My ancestry is primarily norwegian and there are several inter-family marriages that the relationship calculator completely messes up. It's for this reason alone I refuse to part with my family tree maker software that was issued prior to ancestry purchasing it. I can still get a trustworthy relationship from there and then must manually add a note to my tree.