Try to search for the files using "All Types" instead only under video.
After you get some search results, check them using Bitzi before starting the upload:
How to use Bitzi

As a precausion, delete your LW preference folder (if you haven't down so) as described in Point #2 & 3 in Fixes for Limewire
http://www.gnutellaforums.com/showth...threadid=36420

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