- enter the folder in thumbnails (or thumb. & label) view
- select all files
= no file is displayed in preview (I'm not sure if this is a bug, but the first, or last item should be displayed)

- select the first image
- no problem, the first image is displayed in the preview
- select all files
- select the second image
= last image is displayed in preview


XnView 1.96, Win Vista SP1.