I've tried importing with the 'Build Missing Thumbnails' disabled, but it's the exact same. The files import fine but when you go to view them, and they try to build the thumbnail, it just crashes. I've gone through my files, importing them one at a time. The music is fine but it's some of the films that are the problem. So far I've found about a dozen and when I import them into GSpot to analize them they are all MPEG files, which GSpot gives no information for. If the files are DivX or XviD there is no problem. This problem just started about three days ago, and the files that are giving me trouble are files that I've imported dozens of times before without any problem. I can double click on any of these files in Windows Explorer, or select File... Open Media File... and the film plays perfectly. I've uninstalled and reinstalled Media Center to no effect. You mentioned a 'Thumbnail View' Option but I can't find it. Is it something I can disable?