Sims 3 for MAC

[FabNicBu]

Every since I installed Sims 4 through Origin, I can't play Sims 3. I keep getting a No Disc Found error. The disc is in the computer.  I also can't log in, it keeps telling me the info is incorrect, it's not.

[Bluebellflora]

@FabNicBu

Please read this thread and follow the instructions and links provided - http://answers.ea.com/t5/The-Sims-Mac/CURRENT-ISSUE-The-Sims-3-Disc-Authorisation-No-Disc-Errors/m-p...