First thanks so much for your plugin. I have not use that much, but I liked. Maybe it sound silly, so silly, but I wonder why do you use Long instead of Lon for the attribute for the osm_map tag.
If you look the url you have http://www.osm.org/?lat=40.5491&lon=-5.6716&zoom=14
If you have a look on the Personal makers you have:
And on the topografix schema you have:
<trkpt @lat @lon>
why do you use Long attribute instead?