fixes #255 - Access to the path is denied

MediaBrowser.Controller/Entities/BaseItem.cs

@@ -269,7 +269,9 @@ namespace MediaBrowser.Controller.Entities
 
             // Record the name of each file 
             // Need to sort these because accoring to msdn docs, our i/o methods are not guaranteed in any order
-            foreach (var file in ResolveArgs.FileSystemChildren.OrderBy(f => f.Name))
+            foreach (var file in ResolveArgs.FileSystemChildren
+                .Where(i => !i.Attributes.HasFlag(FileAttributes.System))
+                .OrderBy(f => f.Name))
             {
                 sb.Append(file.Name);
             }

MediaBrowser.Controller/IO/FileData.cs

@@ -32,8 +32,7 @@ namespace MediaBrowser.Controller.IO
 
             var dict = new Dictionary<string, FileSystemInfo>(StringComparer.OrdinalIgnoreCase);
             
-            var entries = new DirectoryInfo(path).EnumerateFileSystemInfos(searchPattern, SearchOption.TopDirectoryOnly)
-                .Where(i => !i.Attributes.HasFlag(FileAttributes.System) && !i.Name.Equals(".") && !i.Name.Equals(".."));
+            var entries = new DirectoryInfo(path).EnumerateFileSystemInfos(searchPattern, SearchOption.TopDirectoryOnly);
 
             foreach (var entry in entries)
             {

MediaBrowser.Server.Implementations/Providers/ProviderManager.cs

@@ -470,14 +470,6 @@ namespace MediaBrowser.Server.Implementations.Providers
             {
                 using (dataToSave)
                 {
-                    // If the file already exists but is hidden, the below save will throw an UnauthorizedAccessException
-                    var existingFileInfo = new FileInfo(path);
-
-                    if (existingFileInfo.Exists && existingFileInfo.Attributes.HasFlag(FileAttributes.Hidden))
-                    {
-                        existingFileInfo.Delete();
-                    }
-
                     using (var fs = new FileStream(path, FileMode.Create, FileAccess.Write, FileShare.Read, StreamDefaults.DefaultFileStreamBufferSize, FileOptions.Asynchronous))
                     {
                         await dataToSave.CopyToAsync(fs, StreamDefaults.DefaultCopyToBufferSize, cancellationToken).ConfigureAwait(false);