My couple in vv wont sleep in the same bed!!! When I put one to bed and go to the Other, the person does a little dance and shakes his or her head! Why is this and how can I fix it? I hav never had this prob and have more than ten generations.

What does the action line and player feedback area at the bottom of the game window say? That's always a good clue to what is happening.

You don't really need to tell your little family members to sleep, since they will rest on their own when they need it. You can read more about sleeping and rest here and here, which may help explain things a bit better.

If you are trying to get your peep to go to bed when he/she really isn't tired, they will refuse to go to bed. Maybe that is what is going on.