Material Test issue

I am having trouble with the material test. I have used it several times and it worked great. I am now trying it with the Rotary attached. The first one I did only showed and engraved the text but not the grid. I checked and installed the update and am trying again. I have all my settings how i want but now when I try to preview, it’s blank. I am a new user so I’m sure it’s an error on my part but not sure how.

This is what I see in preview.

I figured it out. I hadn’t looked closely at the interval. It was set way too high. I adjusted it to 0.1 and it worked. I hope this helps someone else.