Initialization Error after Updates

kellenvh​  For the Sims Delivery error, please try the suggestion in the accepted solution here:

SDX error, white sim portraits, corrupted save, etc. | EA Forums - 11820162

I realize you don't think it's your computer, butt this particular error is always on the user side.  The fact that the game starts working again could be because you repair or update, or because your antivirus updates to stop blocking Sims 4; it's difficult to tell.  But you'll still need to set exceptions for TS4_x64, TS4_DX9_x64, and TS4_Launcher_x64, or the Bin folder they're in, to avoid the problem in the future.

The firewall is not typically involved, only the antivirus.

Once the game opens, please create a new save and see which packs are loading.  You can open CAS or Build/Buy and try to filter by pack; the ones that aren't loading will show as unowned.  Please list all the packs you own that aren't working, and whether you own them through Steam or the EA App.