Fixed: An error reported by the torrent client, such as tracker error, is no longer considered a failed download but shown as a warning in Activity.

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

@@ -123,7 +123,8 @@ namespace NzbDrone.Core.Download.Clients.Deluge
 
                 if (torrent.State == DelugeTorrentStatus.Error)
                 {
-                    item.Status = DownloadItemStatus.Failed;
+                    item.Status = DownloadItemStatus.Warning;
+                    item.Message = "Deluge is reporting an error";
                 }
                 else if (torrent.IsFinished && torrent.State != DelugeTorrentStatus.Checking)
                 {

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

@@ -109,7 +109,6 @@ namespace NzbDrone.Core.Download.Clients.Transmission
 
                 item.DownloadClient = Definition.Name;
                 item.DownloadTime = TimeSpan.FromSeconds(torrent.SecondsDownloading);
-                item.Message = torrent.ErrorString;
 
                 item.OutputPath = outputPath + torrent.Name;
                 item.RemainingSize = torrent.LeftUntilDone;
@@ -118,7 +117,8 @@ namespace NzbDrone.Core.Download.Clients.Transmission
 
                 if (!torrent.ErrorString.IsNullOrWhiteSpace())
                 {
-                    item.Status = DownloadItemStatus.Failed;
+                    item.Status = DownloadItemStatus.Warning;
+                    item.Message = torrent.ErrorString;
                 }
                 else if (torrent.Status == TransmissionTorrentStatus.Seeding || torrent.Status == TransmissionTorrentStatus.SeedingWait)
                 {

src/NzbDrone.Core/Download/Clients/uTorrent/UTorrent.cs

@@ -115,7 +115,8 @@ namespace NzbDrone.Core.Download.Clients.UTorrent
 
                 if (torrent.Status.HasFlag(UTorrentTorrentStatus.Error))
                 {
-                    item.Status = DownloadItemStatus.Failed;
+                    item.Status = DownloadItemStatus.Warning;
+                    item.Message = "uTorrent is reporting an error";
                 }
                 else if (torrent.Status.HasFlag(UTorrentTorrentStatus.Loaded) && 
                          torrent.Status.HasFlag(UTorrentTorrentStatus.Checked) && torrent.Remaining == 0 && torrent.Progress == 1.0)