The Sims 3 Expanions - "The integrity of the installer cannot be verified."

So I download the Sims 3 and all the expansion packs on my new macbook pro. I installed the Sims 3 successfully, but when I try to install World Adventures it says "The integrity of the installer cannot be verified." I have been reading other threads and tried to download the specific Suffit on the Mega Upload, but it looks like it is down for legal issues. Can someone help me?

Hello,

Have you tried this first: https://games4theworld.forumotion.com/t775-the-sims-3-mac-the-integrity-of-the-installer-cannot-be-verified-fix ?

I tried that and it didn't work. I followed all the steps and I am stuck on number 5. I see "The Sims 3.dmg" file, but I don't see the "Disk Image" Icon on my desktop.

I was working with the base game that i downloaded from games4theworld and was told it doesn't work on mac. So i downloaded the base game from the disk i have and i still have the same problem.

Hello,

Try the RELOADED version of the base game and be sure to remove your old version of the game and restart your Mac, prior to installing the new version.