internal server error 500 geoXml.load через https

Доброго времени суток!

Есть проблемка - вот пример kml файла, он доступен по обоим ссылкам:

http://kml-samples.googlecode.com/svn/trunk/kml/Region/GroundOverlay/usa-ca-sf.kml

https://kml-samples.googlecode.com/svn/trunk/kml/Region/GroundOverlay/usa-ca-sf.kml

https://api-maps.yandex.ru/services/geoxml/1.2/geoxml.xml?callback=id_1376473358946862761&url=http://kml-samples.googlecode.com/svn/trunk/kml/Region/GroundOverlay/usa-ca-sf.kml

выдаёт:

id_1376473358946862761({"error":null,"response":{"kml":{"Folder":[{"name":"usa-ca-sf","open":"1","GroundOverlay":{"name":"San Francisco","Region":{"Lod":{"minLodPixels":"150","minFadeExtent":"200","maxLodPixels":"1200","maxFadeExtent":"200"},"LatLonAltBox":{"north":"37.82053872095779","south":"37.70316249008254","east":"-122.3497604415885","west":"-122.5276024676772"}},"Icon":{"href":"pngs\/san-francisco.png"},"LatLonBox":{"north":"37.82053872095779","south":"37.70316249008254","east":"-122.3497604415885","west":"-122.5276024676772"}}}]}}});

https://api-maps.yandex.ru/services/geoxml/1.2/geoxml.xml?callback=id_1376473358946862761&url=https://kml-samples.googlecode.com/svn/trunk/kml/Region/GroundOverlay/usa-ca-sf.kml

(через https) выдаёт:

id_1376473358946862761({"error":{"status":"500","message":"internal server error"},"response":""});

Что делать, если нужно обратиться через https? Спасибо!