November 2019
After the download and installed of expansions pack “The Sims 3 Late Night” come out a error message “unknown error”.
Before the installations of this pack, the game started correctly.
November 2019
Wrong forum
November 2019
Where can I post this?
November 2019
@nana35712 Someone already moved your post to the Sims 3 section; it's now in the Mac subsection. So you're fine.
If you don't own any packs that are newer than Late Night, all you need to do is create an alias (icon) for LN in Applications\The Sims 3, alongside the alias for the base game. Here's how:
https://bluebellflora.com/sims-3-packs-not-showing-as-installed/
If you own any packs that are newer than LN by the date EA released them, then you'll also need to copy a folder from LN into the folder for the newest pack you have installed. (So for example, if you own Into the Future, that's where the folder needs to go, because ITF was the last pack released.) This video explains how to do it: