Problems aging my baby

[qwerty8857]

I had a baby that would not age. The game would either crash when it was his birthday, or it would say he was a toddler, but he still looked like a baby. He would slide along the floor on his back when he should have been crawling. Now he looks like a toddler, but his body is completely stretched out. When I move my camera in the house I get black spots and can't see anything ever since he became a toddler. My game crashes sometimes now when I try to load the family. I uninstalled my mods, and that didn't change anything.