Surface analysis mapping goes blank

When I attempt to select a surface to analyze curvature, using Analyze > Surface > , my surface goes blank as soon as I select it.

In other words, when using Curvature Analysis, Environment Map, or Zebra, I can see the effect at first, but then as soon as I select to Revolve, the surface goes blank with only the border showing, and none of the effects are visible. When I deselect, it goes back to normal.

This is true for surfaces or polysurfaces. I’m using Rhino for Mac v5.3.2 .

Any help much appreciated!!

it has been a problem for a while and its on the bug list, i assume this is similar to the issue here

Good enough, thanks for responding… saves me scratching my head :sunglasses: