Hmm... this is the right place at least. I updated the game files last night with some bug fixes so all I can suggest is redownloading it.
What size is the game file when you click to download it? Because it should be 642Mb.
Also, when you started it up with your old saves, did an update window pop up saying "Your Game Updated to 0.1.6b, here is what's new in it..." or something like that?
This is probably by far the weirdest issue I have seen so far. All I can really suggest is maybe redownload and put the game in a new directory or maybe even on a different disk and launch it from there.
Also, I would suggest using 7Zip to unzip the game as WinRar has been acting up a lot lately for VXAce games.
