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.
While I was on vacation in Greece the problems with the connectivity of the FSDeveloper site happened again. Lefteris did some good debugging on it and now we know what the reason of the problems is. A work around is in place, so the FSDeveloper site should be accessible again in the way you are used to. And we are working on a proper solution together with our host.