Mixing textures on components go missing when rendering

[MC Hammer]

So I made a model with 3 components in it. When viewed on SketchUp, every surfaces have textures on it. But when rendering it using SKindigo, the second component's textures are turned into white. The 3 components have the same textures and only the 2nd one ,when rendered, turns white.

[Pibuz]

Hi MC!
Please, try to always attach the image to help the understanding and if possible a zip containing the scene!