[Broadus]

I should be more specific, so I will indeed be!
Okay, after realizing Breakthrough didn't work, I got yet another one. Same problem as the last copy, so I realized it was my computer. I've already fixed the installation problem (not really well,) by doing that Copy Directory thing.
AND NOW... An update!
I went to study which maps didn't have skies, and which settings would show them. I went to test maps, alone, without other players, and none of the maps I had problems with were skyless. I went online, figuring, "Oh, I guess I DO have skies." With other players, I had experienced the same no-sky problem as always. "What the crap? I had skies when I was alone."
And that is the update. Thank you, guys, for giving some good suggestions.