SketchUp 2019 won't let me add new textures

Technical Problems
#1

I’ve just had to reinstall 2019 for Mac. I’m logged into my Trimble account as Commercial Use.

I want to create a new texture. I go to the Colors window, select any of the texture groups to see existing textures. When I click on the “Color” tab at the bottom, all the choices are greyed. When I right click on any of the existing textures, all the options are greyed as well.

Any clue why or how to fix that?

#2

You can only edit or add materials in the “In Model” category.

#3

Yes. You’re correct. Thanks, although I know I was able to duplicate and create new textures in the other lists previously. Is that something new with 2019? It makes it much more difficult!

#4

Looks like a permission issue. Did you had to give access to certain folders after the installation?