The simple answer is that your Mac just can't handle all those EPs installed. The Sims 3 is a very intense, resource hungry game, especially on Macs due to EA having used Cider to make it 'compatible' in OS X. Pets and Seasons are especially demanding. Showtime isn't much better either.
MacBook Airs are not designed for gaming, they are not really powerful enough. And whilst you may be able to play the base game on all low settings, with memories turned off, when you start adding in EPs and/or up your graphics settings the game will just give up.
You should also update Yosemite to 10.10.5, the latest release.
@Bluebellflora
Okay, so i uninstalled most of my expansions now i just have late night, ambitions and generations. It worked but crashed in cas. I'm not good with laptop and have no idea whats wrong.
So it's kind of working! Ok, you need to now regularly purge RAM during gameplay. I think you will probably always have problems because your MBA isn't powerful enough for the game but at least we can try and minimise the frequency 🙂
i read the article and i tried it it said 'command not found' so i installed what it said and it still dosent work. im very frustrated and on the verge of giving up... :/
is there an app i can get thatll purge ram for me?
