@DeadlySimmer101 It looks like Origin is already installed on your computer—there's an Origin logo in the upper-left corner of your screenshot. Does it open properly, or are you seeing this error when you try to launch it?
when I try to launch it, but I think it has to do with The EA app like the person above you had said.
@DeadlySimmer101 Origin should still work on a computer that has the EA App installed as well; plenty of us are still using both. But if you can't get Origin to work and don't want to spend more time on it, that's understandable.
For the EA App, a number of players have said that their store content disappears if they launch Sims 3 through the desktop shortcut rather than the App itself. That's an easy fix: just keep launching the game through the App.
The other question is whether the files for the store content actually disappear. Go into Documents > Electronic Arts > The Sims 3 > DCCache and look for files that end in .ebc. These are bundled store content, and if they're disapparing, that's a separate issue entirely. I don't think that's what's happening here, but please check anyway to make sure.
Otherwise, I'd suggest installing your store content into a clean Sims 3 user folder and making a backup of that folder. Move your saves to the folder and play, and the next time the store stuff disappears, restore the backup, copy your saves over to that, and see whether the store content is back.
Apparently, it also sometimes helps to restart the game once or twice. I don't know why the store content would work, not work, and work again, but restarting is certainly easier than reinstalling everything.
