Originally Posted by Cumminsman76
I have 50 or so .gpx files that are waypoints. Is there a way to open them all up at one time using Mapsource Topo?
Not within Garmin Mapsource.
However, you can use other software such as gpsbabel to combine them into one. For examples, see http://www.gpsbabel.org/htmldoc-deve...ced_Usage.html
If you are using gpsbabel with M$ Windows: In the file-open dialog, press and hold the CRTL button; then you should be able to select more the one file from the listing. Here, all selected files must be from same type (GPX).