Do you have any Mods or CC? If so move your Mods folder to the Desktop and delete localthumbcache.package. Then test the game.
If it works now check for updates to your Mods and CC. Add it back a little at a time while testing until you have found all that are broken.
I can disable the mods and test them out. I have too many pieces of CC to find all the bad ones manually, so I suppose if the cheats window works without them then I'm screwed, haha
I'm also weary of disabling mods and CC. I'm afraid it would break my save files since i use little to no maxis/base game objects. I spent a while on my current save game and would hate to lose it.
Just don't save while testing.
