[gundam83]

Have you checked the permissions on the old folders? Is XBMC aloud to write in them? Are you using the artwork downloader addon?

Please provide more information about your setup. ie. windows, Linux, live, etc

Windows setup. XBMC should be allowed to write to them. I've installed the artwork downloader, but I find it to be slower than the old method of getting fanart and thumbs, plus i've noticed it doesn't pull up images for every movie.