Ok, so I got the the Sims 3 game, and it works fine. So when I registered it, I heard that I could get a tool called the Create-A-World tool. So I downloaded it and everything from the Sims 3 official site, and I was excited, because I missed the ability to create your own neighborhoods, from the Sims 2. I installed it to C:\Users\USERNAME\My Documents\Electronic Arts, because I had gotten a problem, and this seemed to fix it.
The problem is, now I get another pop-up, which says:
"Your currently installed version of the game is not compatible with Create-A-World. You must reinstall Create-A-World. First, back-up your world files and uninstall Create-A-World. Then download the new version of Create-A-World, and install the new version."
I did what they told me to do MANY times, but it still doesn't work! Help!