season game, ok.
right click on it and choose properties - edit game settings and under memory pick 8mb instead of 4, and I'll try it out first thing in the morning and see what I come across.
Edit: what I just did was start a season and saw that I could simulate a game - and it saved no problem afterwards. I'm pretty sure this is the only version of it too. Maybe if the 8mb thingy doesn't work for you (thats the only I changed from default when I grabbed pj64 1.7 ) you could try downloading it again just in case, at least it's a small file.
oh and don't use any savestates!!!
Maybe Meganova or Zorlon will have some advice because I'm running out of ideas.
Actually it does look like a pretty decent game