I'm glad that I'm not the only one having troubles. I'd like to create the walkable castles as the starting base (but keep the build-anywhere function), as I really think EALA made a massive mistake with removing them, but then this happens even though the assets are already in the game?
I know people have gotten it to work as I've seen screenshots of Castles in BFME2 and RotWK. I just don't know what is going wrong. Is there anyone who is still active who's had success with this?