I just downloaded Knytt Stories from Nifflas' website, onto a relative's computer where I'm staying for the weekend, and when I try to play a user-created level, it says, "You need a newer version of Knytt Stories to play this."
But I just got it off Niff's site yesterday.
It's a Dell computer, a couple years older than the one I have at home, Dell desktop, maybe 2003, 2004... Windows XP.
Any idea what the problem could be?