The thumbnails are there but when I click and select preview so I can edit the pictures they won't open.
closed as not a real question by MaQleod, Diogo, Randolph West, Joe Taylor, Oliver Salzburg♦ Jul 26 '12 at 0:24
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If you are using windows live essentials try this.
Try to go START / default programs / set your default programs / and pick "windows photo gallery" and "set this program as default"
if that doesn't work do the same thing, but select a different photo program than windows photo gallery.