[Therion] Unsupported date

[Andrew Atkinson]

Hello

After a few years of not using this data set

http://www.cave-registry.org.uk/svn/CheddarCatchment/

I compiled this file

http://www.cave-registry.org.uk/svn/CheddarCatchment/thconfig

and it didn't work, giving this error

therion 6.2.1 (2024-03-20)
therion: warning -- Proj version mismatch: using 9.5.0, compiled against 
9.4.1
cavern - Survex 1.4.12
initialization file: /etc/therion.ini
reading ... done
This is pdfTeX, Version 3.141592653-2.6-1.40.26 (TeX Live 
2025/dev/Debian) (preloaded format=pdftex)
  restricted \write18 enabled.
entering extended mode
(./fonttest.tex
checking optional fonts csr10 csti10 csbx10 csss10 csssi10 ... NOT INSTALLED
This is pdfTeX, Version 3.141592653-2.6-1.40.26 (TeX Live 
2025/dev/Debian) (preloaded format=pdftex)
  restricted \write18 enabled.
entering extended mode
(./fonttest.tex
checking optional fonts cmcyr10 cmcti10 cmcbx10 cmcss10 cmcssi10 ... NOT 
INSTALLED
configuration file: thconfig
reading ... done
reading source files ... done
preprocessing database ... done
therion: error -- automatic declination calculation before 1900 not 
supported, please specify declination explicitly


I have no idea how a date before 1900 got in there, but a clue on where 
it is would be useful! Is there anything I can do to find out?

Not sure about the Proj version mismatch, I'm on Debian trixie. It does 
not seem to be causing problems

thanks

Andrew