Yeah that's a big issue with this version, really sorry about that.
It has been fixed in 0.7.5
Viewing post in Dawn of Corruption 0.7.4 Release Notes comments
Yeah I ran into that as well. It was really bad because I accidentally reloaded the web page (I'm playing on a tablet in Chrome off of your website) and when that happened it tried to load the autosave which was corrupted and caused a fatal end of the game. Quite a bummer because I was enjoying the tweaks I had experienced so far up to that point. But at this point I kind of think I'm ready to just go ahead and throw some money at you so I can get that latest version too haha