Hi Everyone,
Thanks for the timely replies. I wasn't really expecting anyone to follow up. Good to know that there is an active community here. I am a new HDA user (maybe you can tell, :-/), and this was my first post.
Yes, it could well be the video card (actually, integrated HD3000 chipset; Core i3, 6MB mem, Asus laptop). I will install HDA on another system and try viewing the plan on it and see if the 3D views render.
If it is the video card, I have to say, it would leave me somewhat perplexed. How is it that I have no problems displaying 3D views in the beach-house tutorial plan that I just completed, but I cannot display 3D views in the plan that I created subsequently? That doesn't make sense (at all). I'm begin to think that something got corrupted with the HDA installation subsequent to my creating the beach-house tutorial plan.
Thanks for your help.
Kenton