No joy
Hmm, okay this is an interesting.
What I know is that the sky is simply not rendering (trueSky). This is usually an issue if you don't have the binaries which i linked to you in a zipped version earlier, however all my builds come with the binaries to begin with.
I'll have to look deeper into this graphical issue.
In the meantime are all your graphics redistributables up to date? (DX10, DX11, Video Drivers)