"Did Not Win" is usually the result of ebay not responding when AS placed your snipe...they are *usually* quite uncommon (I have had 1 in the past 2 years).
I would say that your snipe didnt hit the ebay servers in time, which resulted in no bid being placed.
Not much consulation, but if you >>CLICK HERE<< and file a support case, you might get a couple of free snipes to help ease the pain.
Good news that no one else placed a bid though, you should be able to contact the seller and ask if they are going to relist.