Unable to Start Error

Are you using any mods or custom content in your game ?

If so, try removing it to see if it starts again.

I'm not but thank you. ☹️

Try if this helps you : http://sims4.crinrict.com/en/2014/09/resetting-the-game-to-factory-settings-without-reinstalling/

I'm getting that error too. I tried generating a new set of user files, and then it threw me a different initialization error.

So, back to Sims 3. I cbb and there doesn't seem to be an real answer to this issue.

Hi. Just go to "C:\Users\(your user name)\Documents\Electronic Arts\The Sims 4" and find a file called "GameVersion.txt" and delete it. It should start up. Mine worked.