Hello, I would like to ask for help too.
My sim family has 13th generation and I discover that my family tree is broken since last patch on April (I guess so because until that time works everything fine). First what happend was blank space instead woman in my 1st generation (I cannot see her photo or name, I cannot click on her) and one of my sim who never had children in 6th generation disappear completely (her 2 sisters with family I can see as norrmal in family treel). Now everytime on Saturday around 3-4am in game disappear all members of my 1st and 2nd generation (around 13 sims). There is no blank space, its like they never exist before. I tried to go back with saves, I played for one sim week and again - on Saturday at 3am was family tree broken.
All these sims who are gone are dead long time ago, I never play for ghost, never add them to houselhold, they usually died and disapper by the time. After that I destroys the urn and graves.
As I wrote until now my game worked quite good (compared TS3) and this bug made my gaming useless, I hope so much it will be possible to find solution for it.
Also can be important to say I turn off ageing for all sims except mine so I dont think its culling problem, I should have "enough space" there.
Thanks a lot for any answer.
P.S. I never used Custom Content or Mods in my game.