Ah, that would explain it then. I actually tried everything and it still wouldn't go. So I am assuming that this file is no longer functional because of the old hardware. Oh well
Viewing post in Babysitter - Complete (Parts 1-4) - Patreon comments
No, you assume wrong. If I wanted to open the original file up to edit this animation, I would need old software. But to play this animation in browser, you don't need anything other than a compatible browser. And again, this animation still works for me when I click "play", so any problems with loading this file are on your end, not mine.