In Sketchup 2024, when I go to rename a texture in mac’s material chooser window, it crashes every time i either tab out of the text box or press enter.
There were a few combinations that could lead to a crash, if you tried editing a material that was not currently used in the model. With 2024.0.1 there now is a message that shows if you try to edit a material that is not in the Colors in Model set.
To rename a material that you had added to your own list previously, you would apply the old named material to a face, switch to Colors in Model, edit the material there, then copy the new named version back into your custom list.