Error message

Hi,


I installed the base game and the expansions that I want (ambitions, pets and seasons) and followed every step, read the ultimate fix installation guide, watched all the instruction video's, read many topics with similar problems and uninstalled an than re-installed the game and the expansions 4 or 5 times. The game did work for a few times but always crashed after 15 minutes. Now it won't start at all and I always get this error (the original message was in Dutch but I did my best to translate it): “Apparently you have performed an unofficial game processing that doesn't match with your current game of the sims 3. We advice you to delete the game or use a more current version of the game. If you don't do this, the game could crash.




I hope you understand my problem and I hope you can help me.

The game is already updated to 1.67 and I used the ultimate fix again and I still get an error message.