I have this issue now as well. I just opened Origin, and I got a small update for The Sims 3, after which the game won't start at all. It keeps asking me to disable some expansion / stuff packs to make the game run better. I disabled High-End Loft stuff pack, Supernatural and Into the Future, but it didn't fix it. Before I ran into these problems today, I did purchase Outdoor Living stuff pack.
I tried resetting to factory settings without uninstalling http://sims3.crinrict.com/en/2011/06/tutorial-resetting-the-game-to-factory-settings-without-reinstalling.html but it didn't help.
Yesterday before any updates or additional stuff packs the game worked just fine.
My system specs: Windows 7, 8GB RAM, Radeon HD7870, AMD Phenom II X4 965.
I've put a picture of the issue (sorry, it's in Finnish, but it basically says: "For the best experience, we recommend using only a few packs at a time, etc.")
You can ignore the message. Just click on that you don't want to see it anymore and it should not pop-up anymore.
Is Origin running ok in the background ?
Does the game never start or close right away ?
Can you see the process ts3.exe pop-up in your task manager or what happens ?
Could you post your Computer's DxDiag?
To gather a DxDiag on your computer, please follow the steps here: http://answers.ea.com/t5/The-Sims-3/HOW-TO-DxDiag-for-Sims-3-PC-Only/td-p/1049584/
You can attach the txt file to your post directly.
