Problems Concerning Worlds and My Actual Game

I bought three worlds and also have Riverview, but they will not download onto my old Mac desktop. Installing expansion packs were easy but when I tried to install the worlds from my downloads on the launcher it said Unable to start game, service initiation failed and a bunch of numbers.

I don't know why this is happening, I deleted all my cc and just downloaded the worlds onto my launcher. Can someone help me please?

Update: I figured it out. It's not a problem anymore.