Textures problems

Hi everyone, I download the latest versions of TM, and when I import models from SketchUp for rendering, the textures get lost and everything turns white. However, in the image maps, the name of the imported texture appears, but it still shows up all white. Then I try to apply other external textures (I have a folder of textures), which used to work fine, but I can’t get them to work anymore. They don’t even show up in the texture map, and the model remains white. I’ve already downloaded, reinstalled, formatted my PC, and nothing works.

images here >