Failed DeleteStatus now only a Warning, also added null check to handle older NzbGet version.

src/NzbDrone.Core.Test/Download/DownloadClientTests/NzbgetTests/NzbgetFixture.cs

@@ -213,6 +213,19 @@ namespace NzbDrone.Core.Test.Download.DownloadClientTests.NzbgetTests
             result.Status.Should().Be(DownloadItemStatus.Failed);
         }
 
+        [Test]
+        public void should_report_deletestatus_dupe_as_warning()
+        {
+            _completed.DeleteStatus = "DUPE";
+
+            GivenQueue(null);
+            GivenHistory(_completed);
+
+            var result = Subject.GetItems().Single();
+
+            result.Status.Should().Be(DownloadItemStatus.Warning);
+        }
+
         [Test]
         public void should_report_unpackstatus_freespace_as_warning()
         {

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

@@ -167,7 +167,12 @@ namespace NzbDrone.Core.Download.Clients.Nzbget
                     historyItem.Status = DownloadItemStatus.Failed;
                 }
 
-                if (!successStatus.Contains(item.DeleteStatus))
+                if (!successStatus.Contains(item.DeleteStatus) && item.DeleteStatus.IsNotNullOrWhiteSpace())
+                {
+                    historyItem.Status = DownloadItemStatus.Warning;
+                }
+
+                if (item.DeleteStatus == "HEALTH")
                 {
                     historyItem.Status = DownloadItemStatus.Failed;
                 }