I was sure to install them in the correct order.  Also, I just went into the game again and looked more thoroughly and realized that all of my sims are gone - no just those in NL.  The only sims that are in the game are maxis created.  None of the sims I created or downloaded are there.  I checked inside of the houses that I furnished and everything is in tack - the furniture, cars, etc.  Everything is the same except there are no sims. 

So I turn on Sims 2 and load my Nightlife neighborhood.  As I'm looking for the family I want to play with, I notice that there are no houses occupied and almost all of them should have sims living in them.  I don't even have any sims in the bin and I know there were about 4 families in the bin when I played last night.  I also noticed that my businesses in my business neighborhood are also vacant.  It's as if my sims in Nightlife never existed because they owned those businesses.  My other neighborhoods are no problem.  Please help.  I have a family of 4 generations that I really don't want to lose...

I disabled all hacks and it still does it, but only with this one restaurant.

It happens with all sims that are seated in the restaurant.

At this one particular restaurant that I downloaded, the server would bring the food to the table, but the customer will get up without eating and leave the restaurant.  What is that about?