I'm not exactly sure what you have going on but you mentioned a hybrid mod. I assume that mod lets you have sims that are hybrids like an alien or vampire spellcaster. If that is the case, you problem probably is caused by the mod. The game does not allow that out of the box. So, the first thing you need to do is to see if there is an update for the mod for the current game version. It there is, that might solve the problem. If not, you're going to have to remove it if you want the problem to go away. And if you use other mods, you should probably check those as well and update those you can or remove those you can't update or otherwise verify that they work correctly with the current game version.
Hope this helps.
