I have the same problem when getting back to leiffrin, the black screen(not entirely black there are some grey areas too). I did the quest in the first town, got the grain and then when i wanted to go back to the princess or whatever she is to tell her, the whole leiffrin map is black. I can move the mouse and the arrow shows up where i can change locations and i can press it and go there and the scenes obviously changes, but all is still black. I can leave leiffrin and the map of other areas are shown then and no black screen, but if i try to go back to leiffrin it is black again. I tried loading a save a couple of times, started a new game a couple of times, even deleted the game and downloaded again, still the same problem. Have windows 10 64bit. I saw the dev saying that if you are using fast skipping it can have problems and i used that, but then when i tried to start a new game i played without using that and still the problem is there.
Also i downloaded the save files that this guy is uploading but they do not work. I put them in the folder where the saves are kept,in the location that the dev said the saves are kept. Still when i start a game i only have my saves shown and this downloaded saves are not there.