Mesh heightfield from image doesn't work

Rhino Rhino for Mac
1

The other two methods for making a heightfield from an image work fine, but if I select “Mesh with vertexes at sample locations” I just get a flat plane every time.

2

Hi Ben- thanks, I see that as well.

http://mcneel.myjetbrains.com/youtrack/issue/MR-1550

-Pascal