I've just reinstalled GS ... no change at all.

For the second shot I removed the light in WED:

double click on light, pressed del (light was removed), build, start

The only remaining light in the second shot is coming from the light emitting entity "dummy_light_mdl_001" and some ambient light. No other changes were done (neither code nor level).

If the light would not have been removed where's the shadow of the car as you can see it in pic 1?