@shanls96, don't know what to tell you regarding a "bunch of homeless ghosts"....that's very weird, and not what MCCC does in my game. A week is not really a lot of time, but a bunch of ghosts is not what should happen either. Just some questions I thought of that could help get to the bottom of it:
Are you sure you started a NEW save file?
Maybe share your mc config file and we can see what settings you might not have set appropriately?
Do you have other mods as well that weren't updated recently...maybe some other mod is killing off the sims being created?
You do also need to be more patient, 1 week is not much time. MCCC does not run all of it's routines every night. Additionally, you need to make sure you are taking your Sims places...not just staying at home and going to work. The game, not MCCC, makes NEW sims. MCCC just names and dresses them if you set it to do so. Other than walk-by's and co-workers the game isnt going to be running routines to generate new sims when you just stay home, so if you aren't getting your sims out to a variety of lot types you won't see as much activity happening regarding new sim generation.