Installed Supernatural, now Sims 3 doesn't work.

Version: 1.50.56.021002
Under 'Update' Button: 18.0.126.021001
Expansions: University Life, Seasons, Pets, Diesel Stuff, Generations
All expansions are from games4theworld
I do not have any mods on the game
I've cleared my cache but this hasn't helped either

The game has been working perfectly fine other than it freezing every once in a while and closing unexpectedly, of course that's been usual for just about any game. I decided I wanted to try Supernatural, so I did and just a little while ago I installed it. After putting on the fix, I tried opening it. Nothing happened. I have absolutely no idea why Sims stopped working, it just did. Everything beforehand worked perfectly fine other than a small glitch with University Life, of course I doubt this was the problem considering it only happened once on one save, but if you believe it may be relevant just ask me and I'll say what happened.

When you applied the ultimate fix, did you follow ALL the steps?

Did you reapply the manual patch once you were done installing games? This can help a lot of errors get solved before you even know they're there. Also, try reapplying the crack from the fix. Sometimes (this has even happened to me) it doesn't copy over correctly.

Also, are you using any mods/cc?