Re: Sims 3 on Mac - No Game Disc Found
It is a known issue, you need to register your games in Origin, uninstall the EP and download and install the digital version. All help and instructions you need are in this thread - http://answers.ea.com/t5/The-Sims-Mac/CURRENT-ISSUE-The-Sims-3-Disc-Authorisation-No-Disc-Errors/m-p/4882518#U4882518
Locking this thread but feel free to post in the above linked one should you need further help 🙂