Hey everybody I am new to the forum and fairly new to sketch-up. I am a landscape designer and my company focuses primarily on high end residential homes in the coastal wilmington, nc area. I have watched several of the tutorials on the sandbox tools, however i am still having some trouble.

I import my Autocad siteplan with contour lines, select the contours, and then select the sandbox 'from contours' tool and I do not see a sketchup representation of the terrain as i had hoped. Am i missing something? Any help would be appreciated.