Sims 3 no disc error Mac Air

[mdiramali]

Dear People,

I was playing original Sims 3 with my Windows PC for months. Now I have to work with Mac so I deauthorized my old pc using Launcher and download Sims 3 from Origin games to my Mac. After installation I did my update manually with original file from EA otherwise launcher crashed. Now launcher works well but when I try to enter the game it gives no disc error. How can I solve this problem?

[mdiramali]

I tried restarting my computer and everything got worse. It now says "Unknown error occured" and launcher doesn't open. I will be glad if I solve this problem because I really love this game.