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?