But as far as I know I defined the map tpv on the .th file. I've been round in a circle before commenting out parts. If I comment out tpv from both .th and config file, then I get the same message with just "lower".

From: Therion <therion-bounces@speleo.sk> on behalf of Martin Sluka via Therion <therion@speleo.sk>
Sent: 07 May 2019 07:26
To: List for Therion users
Cc: Martin Sluka
Subject: Re: [Therion] Maps of maps at lower level in survey tree

6. 5. 2019 v 23:48, alastair gott <alastairgott@hotmail.com>:

map tpv

TotalperspectivevortM

break

Vortex2M

endmap

map lower

TotpersfromfingerM

endmap

TotalperspectivevortM is scrap, isn’t it. But that scrap is part of namespace Totalperspectivevort of survey Totalperspectivevort defined in file Totalperspectivevort.th

Therion must know the way to all objects to work with. If not, it sends message as in your case "Fingernailviatpvtovortex2.th [9] -- object does not exist -- TotalperspectivevortM„. It means on 9th line of file Fingernailviatpvtovortex2.th is object TotalperspectivevortM but Therion doesn’t know the way to it.

You defined the station in equate command correct - 1.2@Totalperspectivevort (station_name@name_space)

Use the same way in your map definition

map tpv
TotalperspectivevortM@Totalperspectivevort
break
Vortex2M@Totalperspectivevort

endmap

Note: I after years started to name maps as xxxxxxxxx.map and scraps as nnnnnnnnnnnn.scrap just to see what is the object listed in definitions.

Martin Sluka