This is a heads up for folk using 3ds max and vray and want to create interiors based on the window primitive in the AEC geomotry section.
The transparent parts of the window, in fact the whole inside of the window, will render as a solid opaque object. I had a nice interior rigged up and wondered why I wasn't getting a square of hard light on the floor.
Might be old news to some of you but hey. See render:
[ATTACH=CONFIG]46364[/ATTACH]
EDIT: Ooops, actually, I just remade my scene using non AEC objects and had the same issue the minute I put glass in the window. The trick was that I didn't have 'affect shadows' checked in the vray material.
Disregard!