launcher crashes after following the crashes/ freezes fix

I recently downloaded Sims 3 Pets, and at first the game would launch just fine and it would run for a while. But after a while within 5 seconds to 5 minutes, the game would crash. So I tried to look into it and found "The Sims 3 crashes/ freezes..." I've tried the the fixes 1 and 2. But I didn't have the tab or option of "vertical sync" for my video card. After I finished 1 and 2 I couldn't open up my launcher anymore. It gave me a message saying dep was blocking it or something. So I removed it. restarted. But it still wouldn't work. I just thought somethings probably wrong with my comp so i tried re-installing it. Then restarted my computer. But it still wouldn't launch. so i tried to open it manually in Program files(x86) and it launched. But my saved games didn't load. :/ I was too scared to proceed any further, So I just exited Sims.
Did i do something wrong?
:{

I actually found out that it wasn't the dep settings. It was changing the properties of the exe. files. So I reverted them back to the way they were, and the launcher worked and started loading the saved game. But then it would crash while loading. Also I'm getting a weird message, something like unofficial game does not match your current version of Sims 3.
I don't know if that's useful or not.

Ahhhh okay! Thanks! I'll give it a try


//EDIT

I found the mod that was causing that message. For some reason my game
still won't load. It gets past the new game/ saved game screen to the
loading screen, but then crashes. I've changed the DEP settings like the
fix thing says. And I also made sure to check which fix I had and it
wasn't the temporary one.