I created a family in CAS: mom, dad, 2 teen girls and 1 teen boy. The teens are showing up as children to each of the adults (mom and dad) but the mom and dad are roomates. (wth?) I didn't realize ...
This cheat no longer works for me. I did everything you guys said and it still tells me I can’t edit pre-existing sims. Once in CAS I have to close the cheat window because it covers everything I want the change (the Sim family relationship tool).