"Unofficial game modification" warning?

I did everything I was supposed to do with my own version of Sims 3 I bought a couple years ago with the Island Paradise expansion I got here and got it all working after numerous downloads and help. And the game launches and everything but right before it starts it crashes and this warning box pops up

what can I do to solve this?

If your game is updated to the newest version ( 1.67 ) than you can just ignore this "warning" - it is a bug from EA.