@Seabody ...Nope, nothing is downloaded.
@Ricalynn ...I tried resetting them. I'm not sure if I did it correctly though. I did, without the quotations, "resetSim Mia Bentley" for the baby and "resetSim Seoul Bentley" for the mother. I kept getting the same result...nothing.
And actually, the baby was on the floor when I changed Active Households to that family. Initially, I thought the Sim was obeying the commands because the baby was real close in between two chairs and a doll house, but once I moved them out the way...it still didn't work. Luckily, I was able to get the father to put the baby in the crib, but I still can't get both the mother and father to do anything else. So no I'm just left with using the 'Make All Happy' option :-/
Furthermore, I changed Active Households again to another family and I'm having the same problem with them. I'm now worried that if I keep using 'Make All Happy' that another problem with begin. This is starting to become a headache.