With the new version of the plugin without any changes.
I tried changing the skin and installed PureVision HD. In this skin the studio image is displayed by the tag # fanarthandler.movie.studios.selected.single and the collection of logos is in the Logos folder of the skin. When I enter first time in the movie description, a logo is displayed from my collection (from the folder ...\Thumbs\...). When I enter the second time displayed images from the skin folder from your collection. I copied images from the Thumbs folder to the Logos folder of my skin, but it did not help me.