Hi
My version 4.2.2 of BC does not detect Topo Spain v5 Pro in the "old mapsource" way. I ve not investigated the problem yet. I do know that I have properly instaled Topo Spain V5 Pro - Mapsource and BC 404 "see" it. I have instaled img tiles, not gmap version.
BaseCamp 422 does read the gmapsupp.img containing Topo Spain V5 Pro.