Fixed: Lidarr stuck if Deluge didn't return an infohash.

src/NzbDrone.Core/Download/Clients/Deluge/Deluge.cs

@@ -57,6 +57,11 @@ namespace NzbDrone.Core.Download.Clients.Deluge
         {
             var actualHash = _proxy.AddTorrentFromFile(filename, fileContent, Settings);
 
+            if (actualHash.IsNullOrWhiteSpace())
+            {
+                throw new DownloadClientException("Deluge failed to add torrent " + filename);
+            }
+
             if (!Settings.TvCategory.IsNullOrWhiteSpace())
             {
                 _proxy.SetLabel(actualHash, Settings.TvCategory, Settings);

src/NzbDrone.Core/Download/Pending/PendingReleaseService.cs

@@ -86,8 +86,7 @@ namespace NzbDrone.Core.Download.Pending
                 {
                     if (matchingReport.Reason != reason)
                     {
-                        _logger.Debug("This release is already pending with reason {0}, changing to {1}", matchingReport.Reason, reason);
-                        matchingReport.Reason = reason;
+                        _logger.Debug("The release {0} is already pending with reason {1}, changing to {2}", decision.RemoteAlbum, matchingReport.Reason, reason); matchingReport.Reason = reason;
                         _repository.Update(matchingReport);
                         sameReason = false;
                     }
@@ -95,13 +94,11 @@ namespace NzbDrone.Core.Download.Pending
 
                 if (sameReason)
                 {
-                    _logger.Debug("This release is already pending with reason {0}, not adding again", reason);
-                    return;
+                    _logger.Debug("The release {0} is already pending with reason {1}, not adding again", decision.RemoteAlbum, reason); return;
                 }
             }
 
-            _logger.Debug("Adding release to pending releases with reason {0}", reason);
-            Insert(decision, reason);
+            _logger.Debug("Adding release {0} to pending releases with reason {1}", decision.RemoteAlbum, reason); Insert(decision, reason);
         }
 
         public List<ReleaseInfo> GetPending()

src/NzbDrone.Core/Download/ProcessDownloadDecisions.cs

@@ -78,7 +78,7 @@ namespace NzbDrone.Core.Download
                 {
                     if (ex is DownloadClientUnavailableException || ex is DownloadClientAuthenticationException)
                     {
-                        _logger.Debug("Failed to send release to download client, storing until later");
+                        _logger.Debug(ex, "Failed to send release to download client, storing until later. " + remoteAlbum);
                         failed.Add(report);
 
                         if (downloadProtocol == DownloadProtocol.Usenet)