OK - found the reason :-) They are technically csv files but in the GTFS standard the files are named as .txt files. Which QGIS apparently not can handle. Renaming to .csv did the trick ----- Regards Morten Currently using Qgis 3.10.0 Windows 10, 64bit -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html