Underflow. The price money of $42,949,672.76 is 20 cents short from 2^32 cents.<p>The Iowa case apparently (<a href="http://www.chicagotribune.com/news/local/breaking/chi-iowa-casino-error-20150424-story.html" rel="nofollow">http://www.chicagotribune.com/news/local/breaking/chi-iowa-c...</a>) was also close to that ($41,797,550.16), but quite a bit further off. I still would guess underflow to be the problem, though.