Nightfall

What is it about Nightfall that singles it out for appaling movie treatment? The original regularly tops lists of votes for the greatest science fiction short story ever written (not a judgement Asimov himself concurred with, by the way). Why does it only get filmed by people with no talent and no money? A bad film of Nightfall already got made in 1988. Why on earth would anybody remake *that*? Why doesn't someone say, "This is a good story. Why not lets make a good movie out of it?" instead of "Someone made a bad movie out of this, lets make another one." Isn't there a decent scriptwriter and a good director who both happen to be fans of Asimov?