I have a 405 and GTC receives and sends everything to the 405 without a problem.
If I export a tcx from connect.garmin.com (created with a 305) and then import it into Garmin Training Center there is no error but the track doesn't show up in the GTC.
The only way to overcome this is export from Connect as a GPX, convert to TCX in GPSies.com (i.e) and then import into GTC. This way it appears in GTC. What am I doing wrong here?
Also if I try to use the internet explorer plugin to send directly to the watch, it says "sent ok" but nothing appears in Ant Agent and nothing is sent to the watch?!?