JCL,

Pretty simple--thanks.

For the clarification of other users, it sounds like it's accurate to say that entity.ambient indeed does NOT work in the A6 engine (at least not in the same way it did in A5). Apparently that's a good thing though, because it's been replaced by something better.

And I think the important thing for me to figure out was that many video cards currently default the engine to A5 mode.