@zoomer on further inspection I see that the site model is present, but the top surface of it (the ground) is transparent. I can see the model sides and bottom, but it appears 'hollow' because there's no surface. See attached screenshot. The bottom isn't 'flat' so I'm wondering if the top of the model has been flipped/inverted and sent to the bottom?
I couldn't find in Materials any settings to set to 2 sided. Where do I find that?
@MaltbyDesign Thanks for the info but it looks like my model (house) is set at the correct elevation in TM. In VW I have my model in a layer (Floor 0, Floor 1) with the elevation for each set in the layer settings, so Z is not set to 0 as yours was.
Note that objects like the road are "floating" above the surface of the site model.