If it is still not working you will probably need to try talking/working with Daniels118 to figure out why this is failing.

Yes, I knew there were 2 plugins/different authors involved. It's why I didn't post directly on their own implementation threads in the first place ... i'll toss a coin later.

a Frankenstein-like mashup of 150 year old barn, 600mm thick solid rubble-stone walls, an early '90's conversion to domestic use, and internally styled to look like a '70's caravan.

Interesting, to say the least - I understand now. Good luck with all that!!