I seem to be getting this error every time I try to download this game, and I believe it's because you named the file "v0.00". The period seems to be throwing the whole thing off, it thinks the last two zeros are the filetype, not .zip! Renaming the file without the period does nothing on my end. However, I've downloaded other games from the jam and they seem to not be giving me this problem with the 0.00 on the end. I'm not quite sure what's going on.
I suggest re-zipping the game (don't just change the file name, the data might already be lost) without the period and see how that works. We'll see if we can figure this out.