For anyone who is struggling to start Season 2 and like myself has spent hours getting run around on forums seeing assurances that you need only finish Season 1 and when you start Season 2 the game shall magically divine your save file and that if you have any issues it is somehow a problem with your Season 1 files and maybe you should download the 8 entire fucking gigs again just to be sure.
Ignore all of that shite. Just copy the Season 1 save file into the Season 2 root directory, like every other fucking game ever. That is it. That is all you have to do. I don't even know if I'm happy I finally fixed it or if I'm geniunely livid it took so long. Holy shit.
I'm not sure what happened with you, but if you follow the developer's instructions and click "continue" and not load, it works. I had no problems going to season 2.