No matter how you create your CC, Sims 4 Studio requires Blender v2.7 be used to import meshes into the program. You can use other programs like Marvelous Designer Tutorials and ZBrush Tutorials for CC creation and editing, but you will ultimately need to import into Blender Tutorials before importing to S4S. S4S will automatically download 2.70a if no other version of 2.7 is downloaded on your computer. For some tutorials in this space, you will need 2.79 or 2.78.