Can't Open OziExplorer Files

[kumo]

RouteConverter has a internal GPSBabel and uses its funcions unless a external GPSBabel is defined.

The symptom at my PC indicates that a problem may exist if a exteral GPSBabel is present at the PC but not defined in RouteConverter options.

You may uninstall your external GPSBabel and do some tests if RouteConverter detects your files.
Then you may re-install your external GPSBabel and do the same tests again.
Finally you may specify the path to your external GPSBabel in RouteConverter options and test again.

I can't do it here - Andoid tablet & far away from home (vacation).