I also have the same message on my temp saves. This current map seems to be dead for me
I can't say what happenned, I quit correctly yesterday, everything was fine, and I can't load the game anymore.
I tried to attach the save file, but the forum says "Error parsing server response" when at around 20% (file is 106 Mb, is it too big ?). If you need it, I can send it via mail