Re: You reloaded some of my Sims 3 and 4 games

As @Bluebellflora said, TS4 doesn't have a disc version for Mac. TS4 for Mac is entirely built on the OS X environment (so there would be the common problem of unreadable files, platform etc.)

If you have registered your game in Origin, you should be able to download from there. Otherwise, you'll need to use Bootcamp to install and play your Windows version.

Hope this helps!