No textures with export to trainz

Be using SketchUp 2017 to make models for the game Trainz which has it own exporter extension. Everything was fine until yesterday when the exported models do not have the texture files. The extension export them as tga files. That is no longer working. Any ideas.
Thanks
Chuck

What changed on your computer since it worked? It’s not SketchUp 2017 Make. That hasn’t changed in more than four years.

Or is it something to do with your model? Maybe faces are reversed?

no change to computer, tried to import model and then just made a simple rectangle with textures exported both same issue not textures

Maybe a change to Trainz?

Share your model. Maybe we can see something that’s wrong with it.