not sure if this is the file or not.
background, 4.6 - made the game from scratch in there, made a map, only had a landscape with splines, material caused crash when updating/applying to landscape. then opening map caused crash.
updated to 4.7, brought along project, still crashes on map, starting map over, material has been salvaged from landscape, im not sure, but i think it can also still causes crashes on new landscape, so could be material issue.
could you send me a link to private message to send log? cant upload here