NI just took a look at your scene. When you try to use the material picker C, I see the problem you pointed out. Does it work correctly in the Editor? Couple of interesting things to me:
- It looks like there might be some kind of problem with the structure of the counter tops. I would suggest that you use the Object tab to make sure that the structure of the counter tops is correct, in that all parts are on the same level.
- One of the materials looks like it is show an image of an html page of something like that (I think it is the 2nd one from the left). At first I thought maybe it was show some type of reflection but that does not seem to be the case. I would go to the materials tab and click on the various materials in the list and verify that each show up correctly and that there is no conflict with any names. Without being able to look at the details of your scene it appears that there are some conflicts (just a guess on my part).
I certainly am no “sage” on the product and am still learning also but just guessing and possible problems.
One other interesting one to me was with the flooring. While I had no problem, it appears that one of the material selections matches the tile in the entry way. However, it was really a match, the picker would replace it as well. Again, just a guess on my part, but I am wondering if you have two copies of the material but with different names so that only one of them gets changed by the picker. Is that correct? If so, an interesting concept to “play around with”.
Overall, I think you scene is pretty well done (mainly thinking about materials, lighting and reflectivity). I liked being able to go upstairs in the Walk view.
Just out of curiosity, what software to use to create the scene (model)?
Edit Something else I just thought of. On the counter tops where you are having the problem, check the thickness of the object. If it does not have any thickness (not a solid with thickness), the the surface can become transparent. I noticed that once you changed the material some portions of the counter top are fragmented.