I'm having a similar problem with dfgallery as I've read here.
mediarss is working OK. The slideshow opens with 'loading'. Music works, directories all check out, just no pictures. Piclens even works with the site.
Using PP1.7.1 with DarkMatter Pro.
I did notice that in a regular rss/atom feed, thumbnails, descriptions and links show up, but when using mediarss.php, only the post title shows and is a link. I've looked at other's mediarss pages and they all look like this, so it may be correct.
Just can't figure out what I did wrong.
site home: http://paulison.com/photoblog/
Slideshow page: http://paulison.com/photoblog/index.php?x=slideshow
Any help would be great!