[Plugin: XML Google Maps] How to ?

I tried but with no result. I save this kml (right click on the root node), upload the file, make a link into my post, the map is shown but with no waypoints or my path LINE… nothing..
Where am I wrong?

Using 4.2.
Tried 4.3, I create the KMZ file but in the page i see only the HUD of google with no map in it, but when i try saving a KML file, it shows but without waypoints and/or road line… 🙁
Tried with IE, OPERA and FF , this last show me an error message (when using KMZ):
Could not load the file with the GGeoXML Object! Check the file, the Google Maps API says that there is an error! Validate your links or files with the Validators from http://googlegeodevelopers.blogspot.com/2008/06/new-service-released-kml-validator.html or try enter the URL to your file directly in the search field of http://maps.google.com!

But I don’t understand what the kml validator is telling me what to do..

Sure! here it is:
http://www.yumeshima.net/immobiliareceleste/percorso.kml

Suggestions? Anyone? Please..

uhm You’re right.. how strange… I’ll try again changing something… thank for you help!