Fixed: Handling torrents with relative path in rTorrent

(cherry picked from commit 35d0e6a6f806c68756450a7d199600d7fb49d6c5)

src/NzbDrone.Core/Download/Clients/rTorrent/RTorrent.cs

@@ -139,12 +139,14 @@ namespace NzbDrone.Core.Download.Clients.RTorrent
                 // Ignore torrents with an empty path
                 if (torrent.Path.IsNullOrWhiteSpace())
                 {
+                    _logger.Warn("Torrent '{0}' has an empty download path and will not be processed. Adjust this to an absolute path in rTorrent", torrent.Name);
                     continue;
                 }
 
                 if (torrent.Path.StartsWith("."))
                 {
-                    throw new DownloadClientException("Download paths must be absolute. Please specify variable \"directory\" in rTorrent.");
+                    _logger.Warn("Torrent '{0}' has a download path starting with '.' and will not be processed. Adjust this to an absolute path in rTorrent", torrent.Name);
+                    continue;
                 }
 
                 var item = new DownloadClientItem();