newcrest
It definitely could be an outdated mod or custom content. To test this, move your mods folder out to your desktop.
Go to the Electronic Arts folder\Sims 4 folder [C:\Users\Username\Documents\Electronic Arts\Sims4] and Right-click on the Mods folder, select Cut. Paste it to the desktop. This moves the Mods folder out to the desktop while you test.
Clear the game cache and delete the localthumbcache.package file.
The localthumbcache.package can be found in the main Sims 4 folder
- C:\Users\Username\Documents\Electronic Arts\The Sims 4Removing the mods folder without deleting the localthumbcahche.package file from your The Sims 4 folder, isn't enough of a test, these two steps need to be done together.
Try playing the game again without any mods or custom content. Create a new game to see if you can see Newcrest in the World Select menu.
Finding Problem Mods and CC
http://simswiki.info/wiki.php?title=Game_Help:TS4_Finding_Problem_Custom_Content
