Problem reading a GPX file

[V.V.V.]

Hello,

I have use a FOSS program "Geonaute OnMove 220 OMH/OMD to GPX converter omx2gpx " and it produces a GPX file which is well read by GPXSee but RouteConverter is not able to read it: RC starts to check file formats without finish.
The file seems to have the good gpx structure so I have attached one of this files in order to can test it.

Thank you very much for your good and hard work.