I've downloaded Topofusion Pro 3.07, and I've loaded a .gpx track file from a driving session. The track shows up just fine, but when I right-click the track or on a trackpoint, nothing happens, no pop-up menu shows up. Hence I am unable to try the spline tool (which is why I downloaded the software in the first place).
I've tried using all the different tools, but to no avail. The only tool that seems to have a right-click menu is the Profile and Playback tool, but that is of no help, since it doesn't include the spline tool.
Regards
-Øyvind