[Hunnenkoenig]

You dont have to install whole packages.

Just the xml files in the same folder.

If you like the double XP bar, give the xp bar xml into the directory.
If you like the button toolbars, give the xml into the same directory.

Thats all. Because the /loadui does not work, the info xmls are not relevant. You will never see the info of the author, except you open it with an editor.

The info of the author is only relevant, if you want to load whole skin package, because at the same time only one skin is usable. If there is nothing else in it, just the xp bar, the whole UI disappears except the XP bar...

I hope that helps and i was not very confusing :-)