if you had a file that was causing it to crash before then it might have corrupted one of ur game files. i suggest you delete the cache,groups,accessory and content registry files in ur sims 2 folder. when i had a crashin problem with cc objects it used to crash even when i didn't have them in the game. i deleted those files and it makes it all better, like a clean slate. they regenerate when you load the game up so there safe to delete.
hope i helped,
good luck.