Unable to start: Cannot start because the required game data is missing or damaged (SOLVED)

:\ I have tried everything I have read and I still get this error.
I can load a vanilla game then I put the mods in it will play for a couple of times.
So then I get the error again.
I doubt reloading the game for the thousandth time will help this!
I even renamed the mods folder with a small m not a capital M.
75$ for a game that plays fine for 2 months then it wont play.
Hey Gurus fix this error
Error is 85262c58:29f00e76:00000000
Oh I have owned and played the Sims games since they came out.
If this was a bad mod I could have never gotten the game to play with my mods in at all.

I dont have that ultimate mod in my game mods folder.