Fix crash when SyncPlay shuffle mode is set to sorted twice

1 files changed, 4 insertions, 1 deletions

diff --git a/MediaBrowser.Controller/SyncPlay/Queue/PlayQueueManager.cs b/MediaBrowser.Controller/SyncPlay/Queue/PlayQueueManager.cs
index 9326864d78..258b92e4d9 100644
--- a/MediaBrowser.Controller/SyncPlay/Queue/PlayQueueManager.cs
+++ b/MediaBrowser.Controller/SyncPlay/Queue/PlayQueueManager.cs
@@ -157,7 +157,10 @@ namespace MediaBrowser.Controller.SyncPlay.Queue
         /// </summary>
         public void RestoreSortedPlaylist()
         {
-            if (PlayingItemIndex != NoPlayingItemIndex)
+            // The shuffled playlist is only populated while the shuffle mode is active, so there is
+            // nothing to map back when the playlist is already sorted. Guarding on its contents keeps
+            // a redundant request for the sorted mode from indexing an empty list.
+            if (PlayingItemIndex != NoPlayingItemIndex && _shuffledPlaylist.Count > 0)
             {
                 var playingItem = _shuffledPlaylist[PlayingItemIndex];
                 PlayingItemIndex = _sortedPlaylist.IndexOf(playingItem);