Base Layers category not showing in CAS

Hi there, if you have any mods in your game. Remove them, do a game repair and check the game without mods to see if you can see the base layers. If you can see it then it'll be a UI related mod you need to update.

Hi Robyn_Ro​ 

where are you checking ?

This is where it should appear.

If it's not there, it's likely an incompatible mod. Otherwise repair your game as well.