Just to first give you some background, I am using a Macbook with Snow Leopard installed. I have Sims 3 base game and World Adventures. All my patches are up to date. All my extra content comes from the Sims 3 store.
When I start my game all goes well until it gets to the screen where you can pick the family you want to play, then the message comes up, "We are unable to verify that your disc is a valid copy of The Sims 3 World Adventures. Please contact customer service." After that the game shuts down. If I go ahead and reload the game right after that it has no problems. So I can get into the game, but it takes two tries for it to work. I think its a patch problem because it never happened until after I got one of the World Adventure patches.
Any ideas of things I could do to fix this? It's not a huge issue since I can still play, but it does get annoying.