Tracks don't show up in Garmin Etrex 10

Hi.

A friend of mine gave me a Garmin Etrex 10 and when I copy and past the track in .gpx to the device, it doesn't show up in track manager.

Could anyone help me?

I have the version 3.60.

Thank you.

Etrex 10 only sport gpx format file .copy way point and traks with easygps software .