I don't know if something changed from version 14 to 15 or if I did something stupid. The fix doesn't work anymore: here the code as it should start with open thumbs: ( vtourskin.xml )
<layer name="skin_thumbs" state="visible" url="%SWFPATH%/plugins/scrollarea.swf" alturl="%SWFPATH%/plugins/scrollarea.js" direction="h" visible="true" align="top" width="100%" height="100" onloaded="skin_updatescroll();" />