I checked some save files I had from the previous version and they work for me, I couldn't tell you why they don't work for you. Also, you don't need to do the first area if you start a new game; you can go directly to the next area :)
I get this error message, if that helps in any way. The saves are from 0.1.0.1
That's good to know, that way I can get to the new content without doing everything else again. It helps that the game has a open structure and replayabilty.