Fixed: Re-processing imported download causing task to fail

Fixes #3501

src/NzbDrone.Core/MediaFiles/DownloadedEpisodesImportService.cs

@@ -105,33 +105,43 @@ namespace NzbDrone.Core.MediaFiles
 
         public bool ShouldDeleteFolder(DirectoryInfo directoryInfo, Series series)
         {
-            var videoFiles = _diskScanService.GetVideoFiles(directoryInfo.FullName);
-            var rarFiles = _diskProvider.GetFiles(directoryInfo.FullName, SearchOption.AllDirectories).Where(f => Path.GetExtension(f).Equals(".rar", StringComparison.OrdinalIgnoreCase));
-
-            foreach (var videoFile in videoFiles)
+            try
             {
-                var episodeParseResult = Parser.Parser.ParseTitle(Path.GetFileName(videoFile));
+                var videoFiles = _diskScanService.GetVideoFiles(directoryInfo.FullName);
+                var rarFiles = _diskProvider.GetFiles(directoryInfo.FullName, SearchOption.AllDirectories).Where(f =>
+                    Path.GetExtension(f).Equals(".rar", StringComparison.OrdinalIgnoreCase));
 
-                if (episodeParseResult == null)
+                foreach (var videoFile in videoFiles)
                 {
-                    _logger.Warn("Unable to parse file on import: [{0}]", videoFile);
-                    return false;
+                    var episodeParseResult = Parser.Parser.ParseTitle(Path.GetFileName(videoFile));
+
+                    if (episodeParseResult == null)
+                    {
+                        _logger.Warn("Unable to parse file on import: [{0}]", videoFile);
+                        return false;
+                    }
+
+                    if (_detectSample.IsSample(series, videoFile, episodeParseResult.IsPossibleSpecialEpisode) !=
+                        DetectSampleResult.Sample)
+                    {
+                        _logger.Warn("Non-sample file detected: [{0}]", videoFile);
+                        return false;
+                    }
                 }
 
-                if (_detectSample.IsSample(series, videoFile, episodeParseResult.IsPossibleSpecialEpisode) != DetectSampleResult.Sample)
+                if (rarFiles.Any(f => _diskProvider.GetFileSize(f) > 10.Megabytes()))
                 {
-                    _logger.Warn("Non-sample file detected: [{0}]", videoFile);
+                    _logger.Warn("RAR file detected, will require manual cleanup");
                     return false;
                 }
-            }
 
-            if (rarFiles.Any(f => _diskProvider.GetFileSize(f) > 10.Megabytes()))
+                return true;
+            }
+            catch (DirectoryNotFoundException e)
             {
-                _logger.Warn("RAR file detected, will require manual cleanup");
+                _logger.Debug(e, "Folder {0} has already been removed", directoryInfo.FullName);
                 return false;
             }
-
-            return true;
         }
 
         private List<ImportResult> ProcessFolder(DirectoryInfo directoryInfo, ImportMode importMode, DownloadClientItem downloadClientItem)