Problems installing DLC bought on Origin for Sims 3 bought on Steam
I bought Sims 3 on Steam a long time ago before I created an Origin account. I then created an Origin account and it recognizes all the DLC I've purchased, but the base game does not show up. I tried to register the base game on sims3.com, but it won't work (possibly because I registered it to another Origin account without realizing it when I created my new account).
All of my DLC and base game are registered to the same Steam account. However, I just tried to buy Pets through Origin and it will not let me install because it says I do not have the base game installed. I had the same problem with the world creator tool. I have no problems getting Sims 3 and other DLC bought on Steam to work together I just can't get DLC bought on Origin to work with my Steam bought base game.