Do you mean that you get no search results at all, or that nothing will download? If it's a problem with nothing downloading, it might be a simple license issue
http://www.gnutellaforums.com/showth...176#post154176

If it's a problem with no search results showing up, ie a blank results page, have a look here
http://www.gnutellaforums.com/showth...search+results