RouteConverter 2.10 is ready

[routeconverter]

When I switch to Speed Profile - I see no graphic and I can not see speeds in various parts of track.

a) Is it possible that GPXEditor calculates the speed from time and distance?
b) There is no standard for speed data in GPX 1.1. I've added support for about a dozen proprietary extensions but you seem to have another variant. Please send me the file via email or provide the relevant snippets since I cannot guess what to fix in RouteConverter to read your GPX 1.1 file.