Ammend to previous commit.

src/NzbDrone.Core/Housekeeping/Housekeepers/CleanupAdditionalUsers.cs

@@ -2,24 +2,24 @@
 
 namespace NzbDrone.Core.Housekeeping.Housekeepers
 {
-    public class FixWronglyMatchedMovieFiles : IHousekeepingTask
-    {
-        private readonly IMainDatabase _database;
+	public class CleanupAdditionalUsers : IHousekeepingTask
+	{
+		private readonly IMainDatabase _database;
 
-		public FixWronglyMatchedMovieFiles(IMainDatabase database)
-        {
-            _database = database;
-        }
+		public CleanupAdditionalUsers(IMainDatabase database)
+		{
+			_database = database;
+		}
 
-        public void Clean()
-        {
-            var mapper = _database.GetDataMapper();
+		public void Clean()
+		{
+			var mapper = _database.GetDataMapper();
 
-			mapper.ExecuteNonQuery(@"UPDATE Movies
-				SET MovieFileId =
-				(Select Id FROM MovieFiles WHERE Movies.Id == MovieFiles.MovieId)
-				WHERE MovieFileId !=
-				(SELECT Id FROM MovieFiles WHERE Movies.Id == MovieFiles.MovieId)");
-        }
-    }
+			mapper.ExecuteNonQuery(@"DELETE FROM Users
+                                     WHERE ID NOT IN (
+                                     SELECT ID FROM Users
+                                     LIMIT 1)");
+		}
+	}
 }
+

src/NzbDrone.Core/MediaFiles/MediaFileService.cs

@@ -146,8 +146,12 @@ namespace NzbDrone.Core.MediaFiles
         public MovieFile Add(MovieFile episodeFile)
         {
             var addedFile = _movieFileRepository.Insert(episodeFile);
-			episodeFile.Movie.LazyLoad();
-			_movieService.SetFileId(episodeFile.Movie.Value, episodeFile); //Should not be necessary, but sometimes below fails?
+			addedFile.Movie.LazyLoad();
+			if (addedFile.Movie == null || addedFile.Movie.Value == null)
+			{
+				_logger.Error("Movie is null for the file {0}. Please run the houskeeping command to ensure movies and files are linked correctly.");
+			}
+			_movieService.SetFileId(addedFile.Movie.Value, addedFile); //Should not be necessary, but sometimes below fails?
             _eventAggregator.PublishEvent(new MovieFileAddedEvent(addedFile));
 
             return addedFile;