Same here as OP, Win7 64x, 4gb. Click to play any newly moved-in family and game stalls, place any family and the game stalls. Works "fine" (I get super-long pauses without AM) without AM.

Tried loading family, save/quitting, putting AM back in, and then loading up the family again: Loads the family so I can see them doing whatever their last action was, but then they respond to NOTHING. Have no portrait and their stats don't change. Time progresses at a consistent rate (no pauses/stuttering as it is without AM).


Updated to test version of AM.. family is now Chinese and totally uncontrollable. I.. uuhh.. am going to go run some more tests.




OKAY: I can say, with the test version of AM in and a brand new Appolloouzaoslafnarflefnarflefnarfle town:
1. Playing a pre-made family already in a home works fine, they loaded in under 30 seconds.
2. Playing a CAS family inserted into an empty lot works fine.
3. Playing a CAS family inserted into a new house (using Move In; furnished "The Madison") does not work. The loading box ran, went away, I got a "house infested with bugs" challenge, i accepted then screen =http://i39.tinypic.com/xek4nb.png.. now works after a second try.. not sure
4. Placing CAS made family into new house USING EDIT TOWN and then choosing them to play works.
5. Moving in a family that already has a house either doesn't work or takes so long that it effectively doesn't work. Was able to place, rotate, and the click accept.. then "Loading..." for upwards of 10 minutes. WORKS FINE

Verdict: Had same problem.. don't anymore.. don't know why.