OK, well, straight away from the save, I can't move on the map and I get the message you mentioned, but that is normal if you've just come back from the battlefield, then I just advanced a turn (press "done" button at the bottom right of screen) and everything worked fine, I could move again, so I don't know why it is not the case on your computer to be honest.
Zappallbugs, do you confirm?
Maybe you had a corrupt download of interface.rpy which sets the mc being home or not at the end of every turn, so use this file to replace your existing interface.rpy.