October 2022
October 2022 - last edited October 2022
This is a shot in the dark, because I don't exactly know what fixed my Castaway game, but try launching EACoreServer.exe in C:\Program Files (x86)\Origin\legacyPM\ as Administrator, before launching the game. Also check if it is able to launch with EA App installed and open.
Sorry I can't offer more, but I have never been able to figure out what the exact fix for this is. One time it started working when I installed a disk version of The Sims 3 and it got authorized for use on my PC using SecuROM. It might be random, or there might be multiple things that trigger the fix.
EDIT: Another thing I've just remembered; when I originally registered my Sims 2 games, I had to create a Pogo account and use that to log in to an old EA website that could register codes for old Sims games. And I also logged into Pogo before my Stories games were fixed. So another thing you could try is to sign in to Pogo with your EA account and see if that does anything.