VIRB Edit does not recognise my GPX files

I have GPX files from Locosys Navi GPS, converted using GPSActionReplay. They open fine with Google Earth, GPS Track Editor, DashWare but when opening with VIRB Edit I get:
"The GPS or FIT file selected has no valid GPS logs, or the GPS logs in the file have no time stamps."
I could not upload the .jpg of the error window from Firefox but it worked from Chrome.


I could not upload the .gpx file until I changed the extension to .txt!