had the same issue with windows 7...even though I opened it w/ Google Chrome (like you advsed Alex)..still defaulted to explorer. I kept having to say skip when the message came up..till it extracted all the files.
1.12 is great..games within the game. you can get some big points when you collect hoadc. Code coming along very nice. Its great experiencing each new code update. So...when's the next one?