In ArcScene, the interactive "Create Contour" tool of 3D Analyst does not create a contour. It works for a TIN derived from the same raster. It works for the same raster in ArcMap. Toolbox/Raster Surface/Contour works just fine. Any ideas?
Interactive 3D Analyst tools in ArcScene
The interactive tools on the 3D Analyst toolbar in ArcScene can be used on a TIN or raster surface:
but there are some sublinks. Like the obvious... toggle on the 3D analyst, but check just in case something applies in your case