Sims complete collection problem.

Whenever I go to downtown, there aren't any NPC sims that are coming to the lot I have visited, but there are NPC servers, like cooks but no NPC that can be socialized and my simoleons have become 0. Whenever I "Go Back Home", it will be on a blank lot with the buy and build mode.

After ireset the game, it starts to load up again the loading of superstar, makin magic, hot date and vacation. After that, the playable sims are gone! The Goths, bob, the Kat family, even the one's I've been playing are gone.

I've tried reinstalling the game numerous times, used the sims eraser, run as admin, it would still have that issue.
I also tried to import the export files, but bob and goth fam can't be recovered.

EDIT: Scratch that. Everytime I go back to the neighborhood 1 after coming from a community lot, the playable sims on the lot are gone, such as the 2 Goth's, the Newbies, the Kat and etc.