2 files changed, 9 insertions, 6 deletions
diff --git a/Emby.Server.Implementations/Collections/CollectionImageProvider.cs b/Emby.Server.Implementations/Collections/CollectionImageProvider.cs
index 463d276e5..c7378956d 100644
--- a/Emby.Server.Implementations/Collections/CollectionImageProvider.cs
+++ b/Emby.Server.Implementations/Collections/CollectionImageProvider.cs
@@ -21,7 +21,7 @@ namespace Emby.Server.Implementations.Collections
         {
         }
 
-        protected override bool Supports(IHasImages item)
+        protected override bool Supports(IHasMetadata item)
         {
             // Right now this is the only way to prevent this image from getting created ahead of internet image providers
             if (!item.IsLocked)
@@ -32,7 +32,7 @@ namespace Emby.Server.Implementations.Collections
             return base.Supports(item);
         }
 
-        protected override List<BaseItem> GetItemsWithImages(IHasImages item)
+        protected override List<BaseItem> GetItemsWithImages(IHasMetadata item)
         {
             var playlist = (BoxSet)item;
 
@@ -76,7 +76,7 @@ namespace Emby.Server.Implementations.Collections
             return GetFinalItems(items, 2);
         }
 
-        protected override string CreateImage(IHasImages item, List<BaseItem> itemsWithImages, string outputPathWithoutExtension, ImageType imageType, int imageIndex)
+        protected override string CreateImage(IHasMetadata item, List<BaseItem> itemsWithImages, string outputPathWithoutExtension, ImageType imageType, int imageIndex)
         {
             return CreateSingleImage(itemsWithImages, outputPathWithoutExtension, ImageType.Primary);
         }
diff --git a/Emby.Server.Implementations/Collections/CollectionManager.cs b/Emby.Server.Implementations/Collections/CollectionManager.cs
index 4e5d344a3..5b168f6cc 100644
--- a/Emby.Server.Implementations/Collections/CollectionManager.cs
+++ b/Emby.Server.Implementations/Collections/CollectionManager.cs
@@ -12,6 +12,7 @@ using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
 using MediaBrowser.Model.IO;
+using MediaBrowser.Model.Extensions;
 
 namespace Emby.Server.Implementations.Collections
 {
@@ -190,7 +191,9 @@ namespace Emby.Server.Implementations.Collections
 
             if (list.Count > 0)
             {
-                collection.LinkedChildren.AddRange(list);
+                var newList = collection.LinkedChildren.ToList();
+                newList.AddRange(list);
+                collection.LinkedChildren = newList.ToArray(newList.Count);
 
                 collection.UpdateRatingToContent();
 
@@ -241,9 +244,9 @@ namespace Emby.Server.Implementations.Collections
                 }
             }
 
-            foreach (var child in list)
+            if (list.Count > 0)
             {
-                collection.LinkedChildren.Remove(child);
+                collection.LinkedChildren = collection.LinkedChildren.Except(list).ToArray();
             }
 
             collection.UpdateRatingToContent();