Basegame not compatible,

 

After installing the Sims3 and/or expansions/accessoires it may occure that you get following error:

Unfortunatly this is often caused by a failed installation of a patch, or an installation has been aborted.

There's nothing left then remove the whole game and install it all over again.

Whatever you will try, without removing the basegame you won't be able to play or update your game!