I downloaded the Klassic MK Attires and it said the Klassic Fatalities were to come with it, I just assumed they'd be added to the move lists of Scorpion, Sub Zero and Reptile but no, i had to look them up. Does'nt really make sense and Scorpion's "Toasty" fatality is a bitch to pull off, i hate fatalities that involve having to jump.
Toasty is easy as HELL to pull off. You must suck at fatalities, it's one of the easiest fatalities in the entire game. Just hold down block while you do it and let the block button go when you're done the input.
Or if that's too hard for you for whatever reason, without holding the block button, press down, up, up, and by the time you finish the last up, Scorpion will still be in the air...as soon as he lands, note...as soon as he LANDS, don't press it while he's still in the air, then press triangle and I guarantee the Fatality will connect. Make sure you have the right range too, you have to be further than sweep distance. I think the distance it says is sweep but that's wrong, you have to be like a quarter of the screen away from the opponent.