update library monitor

MediaBrowser.Server.Implementations/IO/FileRefresher.cs

@@ -12,6 +12,7 @@ using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Library;
 using MediaBrowser.Model.Logging;
 using MediaBrowser.Server.Implementations.ScheduledTasks;
+using MoreLinq;
 
 namespace MediaBrowser.Server.Implementations.IO
 {
@@ -136,9 +137,10 @@ namespace MediaBrowser.Server.Implementations.IO
         private async Task ProcessPathChanges(List<string> paths)
         {
             var itemsToRefresh = paths
+                .Distinct(StringComparer.OrdinalIgnoreCase)
                 .Select(GetAffectedBaseItem)
                 .Where(item => item != null)
-                .Distinct()
+                .DistinctBy(i => i.Id)
                 .ToList();
 
             foreach (var p in paths)

MediaBrowser.Server.Implementations/IO/LibraryMonitor.cs

@@ -404,7 +404,20 @@ namespace MediaBrowser.Server.Implementations.IO
             {
                 Logger.Debug("Changed detected of type " + e.ChangeType + " to " + e.FullPath);
 
-                ReportFileSystemChanged(e.FullPath);
+                var path = e.FullPath;
+
+                // For deletes, use the parent path
+                if (e.ChangeType == WatcherChangeTypes.Deleted)
+                {
+                    var parentPath = Path.GetDirectoryName(path);
+
+                    if (!string.IsNullOrWhiteSpace(parentPath))
+                    {
+                        path = parentPath;
+                    }
+                }
+
+                ReportFileSystemChanged(path);
             }
             catch (Exception ex)
             {