Stupid idea, probably, but to be on the safe side:
where is the preconditioning file located?
If it is in the working directory, try
paul@graveyron:~/displaycal/jul20$ targen -v -d2 -c ./TECCO_SC-P7000_PFR295_FineArtRag.icc -G -g8 -f210 p7000_tecco_pfr295