tanguy.davoust

Hello, I work to Vectorworks Spotlight 2020. I have a problem. When I insert a lighting instrument withe the tool, all my drawing becomes black, all the textures are dark...(when I'm in a 3-D view with OpenGL). It seems to be just with the lighting instrument tool. I've been trying to close and reopen my drawing, I checked all the lighting options but nothing to do. Do you have any idea how to help me? Thanks for your help !