I would venture a guess that load is a depreciated command from the early days of Krpano. As Klaus keeps the software backwards compatible, it still functions but has not been updated in quite a while since there are separate commands for scenes and xml loading. Scenes were not around when I purchased my license so there was no need for a loadscene command back then. However, as far as I can remember, which I believe is version 1.0.6, loadxml has been around and in use,----Edit: but not for scenes.---/Edit

--Re-edit: I was thinking loadpano when I wrote loadxml in the paragraph above ---/re-edit

I could be missing the point, but loadpano() and loadxml() are both documented here:
http://krpano.com/docu/actions/#loadpano

loadxml() is not supposed to be used to load a file, but instead you pass an xml string to it directly.
loadpano() loads the specified xml file into a string and then continues in the same way as loadxml()

wrong post.