SceneryDesign.org Oops, I forgot to test the output of the ground polygon wizard in FSX with the shadow option for scenery buildings on. And you know what, there is still a bug in the output that does not display the shadow correctly. I will try to fix this issue soon, but for now you are warned.
An easy and dirty fix is to create platform surface a bit above the ground poly. Shadows will be projected onto the platform.
Let me give that a try. Not sure how that will work out with the ground polygons that are curved with the earth though.