I am trying to download tracks from a Garmin 400t connected via usb.
With either garmin serial or nmea mode set in the gps, I receive the error

"One or more of the tracks are of unknown format. They were skipped."

How can this be corrected?

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The error means that the file could not be read as a GPX file. There might be something wrong about it. Or else there might be a bug in the GPX reading code.

Please email me the file so I can have a look.

You may use HoudahGPS to download the file in GPX format.

Pierre Bernard
Houdah Software s.à r.l.

Houdah Software s. à r. l.

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