Looks like your save may have been corrupted at some point. If you care about your old save game, please send me the .json save file by running the contents of this pastebin in your console:
http://pastebin.com/raw.php?i=vfn6PzDD
Your menu should now have a “save to file” option. I’ll see if I can fix it.
If you don’t care and just want to play in your browser, run this in the console:
game.saveClear = true; localStorage.clear();
