I'm surprised you've gotten loading to work at all, as the devs have said it won't be in till next update. Starting a new game is the same issue. I think it has something to do with unloading a previously loaded world.
I'm not "loading" anything my friend. I mean when the game loads the stage. When it's "building" it. I can finish a game, maybe two, but eventually when creating a new game the map won't "load". I see the UI, but everything else is grey. No map, no Sovereign, nothing. The other thread on this has pics. I suppose it can happen if you start a new game as well. It hasn't done that one "yet"..lol. Sorry for the confusion. I'm not loading a save game.
Elkoba above me here shows a screen shot of what I'm talking about.