Rodrigo
Your files compile perfectly to export a 3d model.
However when compiling a map to pdf, watch the command line window as Therion runs. There are errors about point user water before my Windows 10 system pulls the plug with an untrapped error.
The Therion Log does not show this, but does report “metapost exit code -- -1073741571” which suggests something completely out of control.
Looking in your th2 file I see comment references to hundreds of user defined symbols, which is intriguing.
I suppose the error may be triggered by the three points…
point 2971.82 586.33 u:water-drip
in your th2 file.
I see there are also u:claystone, u:danger and u:splay which I think are all undefined in the files you supplied.
So I am a bit perplexed. I would expect Therion to raise an error or there are user defined symbols called that have not been defined.
A probably unrelated comment. I would expect that you will have trouble compiling a map due the shape of your wall drawings.

I have annotated the walls in your picture to show blue arrows pointing into the passage.
It is likely that Therion will not produce a nice model because the terminating passage walls do not ‘face each other’ sufficiently.
Bullet points 3 and 5 here https://therion.speleo.sk/wiki/tips?s[]=strange#avoiding_invisible_or_misshapen_scraps_in_loch_and_google_earth
Somewhat describe what I mean.
Bruce
From: Therion [mailto:therion-bounces@speleo.sk] On Behalf Of Rodrigo Severo via Therion
Sent: Thursday, 22 June 2017 3:16 PM
To: List for Therion users <therion@speleo.sk>
Cc: Rodrigo Severo <rodrigo@fabricadeideias.com>
Subject: [Therion] Trouble scrap: metapost exit code 35584
Hi,
I'm having trouble compiling this scrap created with Topodroid. It results in a "therion: error -- metapost exit code -- 35584".
I tried some debug suggestions available at https://therion.speleo.sk/wiki/tbe:wiki5 but couldn't find the culprit.
Any ideas on what might be wrong?
Regards,
Rodrigo Severo