It all depends on the colors you give it, if you give it sketchup colors, they will still appear in black, if it appears in the kseditor and it does not appear in the game, it is very strange, because the last step is kseditor. we could help. and look at the faces in sketchp they are not the other way around
The problem was that I just can add new Xpack's with new projectsYou can tell what object it is and if you can pass it to open it in sketchup and see if it is a failure from sketchup