This is also happening to me. It started shortly after I downloaded the update. I was playing on my current save file and switched to the simology tab on a child sim. It's completely broken, and so are some of the other buttons. Sometimes the camera controls button won't produce the drop-down, and neither will the notification wall. I can go into build mode and back into live mode but when I get back into live mode, the tabs on the bottom right corner all completely disappear, as well as everything on the bottom left. The only thing on the screen is the active game, and the buttons at the top right (minus the manage worlds button). The options menu will not open, and the only way to exit the game is to force stop it. Similarly, if I hit the manage worlds button at all, the popup which prompts you to select if you want to save before going to manage worlds or just go to manage worlds will come up, but regardless of what I choose, the gameplay screen goes black. The game is still running and the sims are still active, but most of the buttons stop working. Again, the only way to close the game is to force stop it. For reference, I don't have any mods and I don't have the new pack, either. It's really frustrating and disappointing. I'm sure the glitch will be resolved, but it seems like all we can do is wait for the sims team to do so.