This error message may appear when using a writer with dynamic schema for any format in conjunction with a Geoconcept reader, or if you have multiple Geoconcept readers for the same dataset:
Couldn't load the GeoConcept map. Please check your path and confirm that you do not have the map open with another application.
To work around this issue, first translate the Geoconcept data to an FFS format file. This FFS copy of the Geoconcept data can then be used in lieu of the Geoconcept reader in the dynamic workspace without issue.