Spent some time adding geo to the cabin and painting a better texture. Registration was no longer so good, and I had to do some scaling to get it to fit properly. Not sure what is causing the problem, just takes a bit more work to get it right.
Actually, after some more experimentation, it seems most sensible just to render from Vue to create the texture, and paint over that, rather than rendering from Blender. Not sure why I’m so keen on getting it to work by rendering from Blender.