OK. Now it shows up.

This is an issue with your graphics card. Quit LayOut, open SketchUp, go to window>Preferences>OpenGL, and disable Hardware Acceleration. Then try opening LO again and re-rendering the viewports.

Very likely this will fix the problem. If it does, it also indicates that the GPU isn't supporting OpenGL properly. You can check for and install driver updates for your GPU which might help. It depends on the card.