Fix on the way for the white sky. It seems to have something to do with the game descriotion being edited, I'm not sure. As soon as I get access to a computer I can upload a fix :)
Upgrade costs aren't handled properly. You have upgrades that have a cost that's not even hundreds, "5,550" for example. But, the gold counter only operates in even hundreds. So, if I had 105,500 gold and purchased an upgrade for 5,550 I'd be left with 100,000 not 99,950.
Thanks adv0!