If the folder and file names for the data are the proper names and not the mumble jumble Limewire used to name them, then you can use any proper torrent client like Torrent - a (very) tiny BitTorrent client or Vuze: The most powerful bittorrent client in the world. to download the exact torrents again, then recheck the data and download the rest needed to complete them.

Edit: or as LOTR pointed out. try reloading the torrent files in Limewire if you haven't done so. I thought you already had tried that from your post.