Black Textures When Importing Into Toolkit

[SGT Cross]

Hi everyone, new to Toolkit but have gotten familiar with it and how it works. I've run into the issue of black textures. I have a vehicle, I export the textures to a file, and then import them back in without even touching them, yet they are now all black. Anybody have any ideas or tips?

[TeamNFS]

See how the textures look in-game.

[SGT Cross]

The car becomes invisible and the game crashes shortly after loading it.