Okay, I just received Apartment Life during Christmas and I'm just now having a chance to really play a lot with it.
The thing is, when I take my sims to a community lot now, there will be a random townie (not just the new social group sims either) who will walk up and it will have the queue 'Be Greeted'. However, they don't do any of the new greetings... they shake my active sim's hand just like
I was greeting
them on a residential lot!
After that, no other Townies will stay on the community lot! They'll walk past, one by one, and if I click them, it says 'Greet (whoever)' and 'Greet With...'. That's it; I can't interact with the Townies unless I greet them first! If I don't they'll just walk on past and leave the lot, as if it were a residential lot instead of a community one.
I've downloaded/installed the up-to-date AL patch (number 2?), and sadly, I did this BEFORE I played, so I wonder if it's something related to the patch.
I removed EVERY SINGLE THING from my Downloads folder; all hacks, objects, clothes, etc. I deleted the Accessory.cache and the Groups.cache. I even created a brand new neighborhood as a test to make sure my normal neighborhood isn't corrupted... Nothing is fixing this problem!

I'm completely at a loss at the moment. This pretty much ruins the game for me until I can figure out how to fix this.