Please take a look at the attached image. I am having trouble with BSPs as they are not receiving shadows. Static meshes are working just fine. Even when i try to create static meshes from BSPs its not working. It goes completely black when I build lighting. I am currently using 4.10
Try testing with a new project and see if the same thing is happening. It could also be that the light intensities are too high or something. Could you add some more screenshots how the meshes go black aswell.