I have not been successful at creating a new Waypoint using this plugin and following the instructions from the manual. Here's what I attempt:
1) Under Other Tasks, I click on Select View->Waypoints
2) Click on Create Waypoint->... on the Map
After doing this, a yellow flag icon is displayed on the map, but any movement of the mouse cursor (as to start to move it toward the map), the flag disappears and clicking has no effect with adding a waypoint. I also tried with under different map views (satellite vs terrain) but got the same results.
Actually, my original goal was to just export waypoint information into SportTracks from my Garmin 310XT. However, after doing some reading, it seems like the 310XT doesn't have an easy way to export waypoint information, so I decided to just try to create them manually.
Here's my system info:
OS: Windows XP SP 3
Waypoints and Courses Plugin: 3.0.4114