Empty directors and writers won't blowup

NzbDrone.Core.Test/ProviderTests/Metadata/Xbmc_ForEpisodeFile_Fixture.cs

@@ -121,6 +121,16 @@ namespace NzbDrone.Core.Test.ProviderTests.Metadata
                         .Returns(episodes.ToList());
         }
 
+        private void WithNoDirectors()
+        {
+            tvdbSeries.Episodes.ForEach(e => e.Directors = new List<string>());
+        }
+
+        private void WithNoWriters()
+        {
+            tvdbSeries.Episodes.ForEach(e => e.Writer = new List<string>());
+        }
+
         [Test]
         public void should_not_blowup()
         {
@@ -151,5 +161,21 @@ namespace NzbDrone.Core.Test.ProviderTests.Metadata
             Mocker.Resolve<Xbmc>().CreateForEpisodeFile(episodeFile, tvdbSeries);
             Mocker.GetMock<BannerProvider>().Verify(v => v.Download(tvdbSeries.Episodes.First().BannerPath, episodeFile.Path.Replace("avi", "tbn")), Times.Once());
         }
+
+        [Test]
+        public void should_not_blowup_when_director_is_not_found()
+        {
+            WithSingleEpisodeFile();
+            WithNoDirectors();
+            Mocker.Resolve<Xbmc>().CreateForEpisodeFile(episodeFile, tvdbSeries);
+        }
+
+        [Test]
+        public void should_not_blowup_when_writer_is_not_found()
+        {
+            WithSingleEpisodeFile();
+            WithNoWriters();
+            Mocker.Resolve<Xbmc>().CreateForEpisodeFile(episodeFile, tvdbSeries);
+        }
     }
 }

NzbDrone.Core/Providers/Metadata/Xbmc.cs

@@ -155,8 +155,8 @@ namespace NzbDrone.Core.Providers.Metadata
                     details.Add(new XElement("displayepisode"));
                     details.Add(new XElement("thumb", "http://www.thetvdb.com/banners/" + tvdbEpisode.BannerPath));
                     details.Add(new XElement("watched", "false"));
-                    details.Add(new XElement("credits", tvdbEpisode.Writer.First()));
-                    details.Add(new XElement("director", tvdbEpisode.Directors.First()));
+                    details.Add(new XElement("credits", tvdbEpisode.Writer.FirstOrDefault()));
+                    details.Add(new XElement("director", tvdbEpisode.Directors.FirstOrDefault()));
                     details.Add(new XElement("rating", tvDbSeries.Rating));
 
                     foreach(var actor in tvdbEpisode.GuestStars)