It seems like the game crashes for some. Both 64 and 32 versions work for me ok. Maybe it's an issue with available RAM size or with specific GPU chip (I have Radeon). The game as a game on the contrary doesn't work
I think the last version I tried was around 0.7.1 (the one which promised a lot of fixes) and one couldn't finish a single stage because of game-breaking bugs (like unable to jump, unable to recover from knock-out, broken double-jump which is critical in some locations, etc). The last version that was playable for me (thanks again for the link!) and to some extent enjoyable was 6.0.0.