Hello.

I recently installed The sims 3+supernatural,it worked fine until i decided to install Pets.
I installed it successfully,but in the launcher,it says that i only have Pets as expansion.I thought it was a bug so i ignored it and launched the game.I had a savegame in Moonlight falls,i wanted to play on it but it was in grey and didn't let me play it saying "I don't have its expansion".
I uninstalled Pets,supernatural is in the launcher again,i launched the game and a popup came "You have installed an unofficial game modification"but i never installed any mods?

Something might have gone wonky during the installation of Pets (I assume it's a legally purchased version). These might be helpful...
http://www.modthesims.info/wiki.php...ification_Error
http://answers.ea.com/t5/The-Sims-3...on/td-p/2289941

Dude,you don't get it.
It's not about the modification,the problem is that i can't install any expansion.
Hope you get it this time.

Your words... "I installed it successfully..."

There is no reason to be snarky - especially since we are helping here out of own free will, with our own free time - and I understood quite well the first time. That is why I said wonky installation because you seem to be able to install but then things go wrong. My suggestion is to do a clean install and in the right Ep order.