I've got a beginner's experience with 3ds Max 2011 and Vray 1.5. I was following a tutorial with my indoor basement scene, when I tried to render and my lights aren't getting into the picture. I had MR sunlight until I bought Vray so I just deleted it and switched the render engine. It's strange, I have four IES lights that are working, and the skylight is coming down the stairs, but if I put a Vray light into the scene, it won't render.
Any ideas? And if you need the max file please let me know. Thanks.
Also, I created a new file and set up a simple scene and the vray lights worked there. I think it's a problem with the Vray renderer using something left over from MR...but I can't find it.