If you're getting a Game Data incomplete message, then try what I had suggested above:
Close the game and do not save it.
Click on the game and choose i
Scroll down till you see the expansions/game packs
Right click on the first one and choose Repair game
Repeat for all game/expansion packs
Restart the game.
Link for reference:
Game Data Incomplete
http://answers.ea.com/t5/The-Sims-4/ISSUE-Game-Data-Incomplete/td-p/4472222However, a question just popped into my head. - Do you play online or offline?
If you play online. Try playing offline to see if that helps. Also it may (?) help to deactivate Origin in-game. As that's known to cause problems when it's on.
Try playing the game in "Offline" mode -- In the Origin Client, go to the Origin Menu and select Go Offline.
Deactivate Origin In-game -- Open up Origin, Go to My Games. Click on the 'I' button next to the 'Play' button by the Sims 4 game. Then click on Game Properties. Check the box to disable Origin in Game.
*Edit*
Here's something that might be worth trying:
Run Origin with Administrator rights and then run a repair on the game (right click the Sims 4 game tile in Origin client and select 'Repair Game').
MrsFlynn
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Thanks for all the info, Mrs. Flynn, though none of that is quite right. What happens is, I click on the game. It automatically updates (I do do backups before patches, just in case) and it seems to update perfectly fine. Now, before I believe it was the March update, the update would finish and then I could click on the game and get right into it. But now, after the update, I go to click on the game and I get the game data incomplete. It won't even let me open the game. The thing is, I have to do a repair game every time there's a patch. I was just hoping to figure out why or to see if there was a way around it.
Thanks bunches ^^