path to skin contains path prefix on multilingual sites

A site with 2 languages. Spanish as default with no path prefix, and English as a secondary language with the 'es/' prefix. When the player is embedded in the page, the path to the skin is correct on Spanish, non-prefixed version of the site, but when I switch over to the English version, which uses the prefix 'en', the path to the skin now also contains the prefix.

So, when the prefix is used, this skin is not found and the player is displayed with the default skin.

In my profile, I defined the path to the skin as http://mysite.com/sites/mysite.com/files/skins/modieus.swf (I used an absolute path)