transferrring gps waypoints onto device echomap 94sv

I have a new echomap 94sv that I cannot get my waypoints transferred to. I have an active captain card set up and have my .gpx files in homeport.  I dragged them to the untitled file on the card but when the card is inserted it is not asking me to open any files.  The one time it did, it said no files were found.  I can see them and read them on homeport so there is no reason that my Garmin cannot see them.  What could I be doing wrong?