Re: [CURRENT ISSUE] Sims 3 Store content uninstalls/won't reinstall, EA App
@Sims3kennedy Please try installing your store stuff into a clean user folder. Move the entire Sims 3 folder out of Documents > Electronic Arts and onto your desktop, open the launcher to spawn a clean folder, download one small store item, install it, and see whether it works. If it does, quit the game, restart your computer, and test again.
If the item still loads, you can start installing the rest of your content in batches of no more than a few items or sets at a time—the launcher doesn't process large amounts of data very well. Worlds should be handled separately, not in a batch with anything else. Keep testing every so often so you catch a problem as soon as it happens.
If and when the store content stops working in the new folder, please let me know how much content, roughly, you were able to install before the problem showed up again. Please also let me know what kind of install this is: Origin, the EA App, disc, or Steam.
If all your store stuff installs correctly, I suggest making a backup of this new Sims 3 folder so you can restore it later should this problem recur. Once you've done that, you can move your saves and anything else you'd like to keep from the old Sims 3 folder to the new one and continue from where you left off.