Unofficical installed content problem-sims 3 supernatural

[finnishmiss18]

Okay, I installed the sims 3 supernatural today, and everything went fine. Then I tried to play the game, and a message popped up and said "It looks like you have installed an unofficial game modification that does not match your current version of the sims 3. we recomment that you either unitstall these game mods or get updated versions f them-otherwise you may experience crashes or significant bugs. Do you want to quit?" And everytime I've pressed No and gone on and played, it just ends and tells me theres a bug and if i should de bug it, i say yes, and nothing happens. Just quits. I really need help with this, i've deleted all of my custom content, and even tried to delete the caches and everything in them--nothing, has freaking worked. I really dont want to uninstsall and reinstall becausei have a lot of expansion packs and its going to be a pain to find the discs (that are probably scratched.) Please help me! I really want to play!

[crinrict]

This message usually pops up if you have a core mod installed

Here's some more info on the matter: http://sims3.crinrict.com/en/2011/04/error-unofficial-game-modification.html