katy perry sweet treats

i have sims 3 base game as well as the ambitions expansion pack.
i went to install your katy perry sweet treats expansion and applied the crack. but now i can't start my game anymore because it keeps crashing.

any help?

At what point does it crash at? Do you just click start and it crashes? Try using the ultimate fix and following the steps found here: https://games4theworld.forumotion.com/t1171-must-read-how-to-install-the-sims-3-correctlycc

https://games4theworld.forumotion.com/t752-the-sims-3-ultimate-fix-should-fix-most-of-your-problems

i clicked start game and yeah it crashed.
the ultimate fix will only enable me to update to the latest version? or will it also help my crash problem? as mine is alreay updated to the latest version

It should fix most of your problems.