Hey! I don't know how many of you have tried this since usually people make maps either day or night. But I'm putting together a special mod and the mood needs to be right. The Maw's sky would work perfectly for this and in HMT its called skyofdoom. Now I've rebuilt maps before with different skies (such as from Gephyrophobia) and it works just find. This is the only sky I'm having trouble with. Whenever I load it back into the map and rebuild it, I get the classic Exception Data error. Is there a special trick to this one?
Since I think skies fall under the category of scenery, I would try PMI. (See Tutorials Section) Sorry if I'm wrong, I haven't worked HMT in a few days due to my Bar Mitzvah.