All right, I admit it. I have tried for a major increase in scale for this Age, and I'm trying some variation in the stone and in the atmosphere, while still keeping it within breathable tolerances.
I can see no reason why that would result in (a) another black, sunless sky, which refuses to take on any colour at all despite my following every single instruction, suggestion and piece of advice I have been given, (b) complete inability to adjust the granularity of one of my stone types. It's not that I cannot change the characters, I do. They simply have no effect. if I did not know better I would say that my Book's link had been severed.
Gods, maybe it has. But then why would it allow me to link through it to an Age which it no longer affects?
Two steps forward, several hundred frodding miles back. Maybe I just can't do this.