diff --git a/Explorer/Assets/DCL/AvatarRendering/Thumbnails/Systems/ResolveAvatarAttachmentThumbnailSystem.cs b/Explorer/Assets/DCL/AvatarRendering/Thumbnails/Systems/ResolveAvatarAttachmentThumbnailSystem.cs
index c6271ab45b..5ddc9e4376 100644
--- a/Explorer/Assets/DCL/AvatarRendering/Thumbnails/Systems/ResolveAvatarAttachmentThumbnailSystem.cs
+++ b/Explorer/Assets/DCL/AvatarRendering/Thumbnails/Systems/ResolveAvatarAttachmentThumbnailSystem.cs
@@ -32,7 +32,11 @@ protected override void Update(float t)
         private void CompleteWearableABThumbnailDownload(Entity entity, ref IAvatarAttachment wearable, ref AssetBundlePromise promise)
         {
             if (promise.TryForgetWithEntityIfCancelled(entity, World!))
+            {
+                wearable.ThumbnailAssetResult = null;
                 return;
+            }
+
 
             if (promise.TryConsume(World, out var result))
             {
@@ -45,12 +49,14 @@ private void CompleteWearableABThumbnailDownload(Entity entity, ref IAvatarAttac
         private void CompleteWearableThumbnailDownload(Entity entity, ref IAvatarAttachment wearable, ref Promise promise)
         {
             if (promise.TryForgetWithEntityIfCancelled(entity, World!))
+            {
+                wearable.ThumbnailAssetResult = null;
                 return;
+            }
 
             if (promise.TryConsume(World, out StreamableLoadingResult<Texture2DData> result))
             {
                 wearable.ThumbnailAssetResult = result.ToFullRectSpriteData(LoadThumbnailsUtils.DEFAULT_THUMBNAIL);
-
                 World.Destroy(entity);
             }
         }
diff --git a/Explorer/Assets/Scripts/Global/Dynamic/PortableExperiences/ECSPortableExperiencesController.cs b/Explorer/Assets/Scripts/Global/Dynamic/PortableExperiences/ECSPortableExperiencesController.cs
index 4dae2360a1..ccfb45c6f5 100644
--- a/Explorer/Assets/Scripts/Global/Dynamic/PortableExperiences/ECSPortableExperiencesController.cs
+++ b/Explorer/Assets/Scripts/Global/Dynamic/PortableExperiences/ECSPortableExperiencesController.cs
@@ -27,7 +27,6 @@ public class ECSPortableExperiencesController : IPortableExperiencesController
         private readonly IScenesCache scenesCache;
         private readonly World globalWorld;
         private readonly List<IPortableExperiencesController.SpawnResponse> spawnResponsesList = new ();
-        private readonly ServerAbout serverAbout = new ();
         private readonly FeatureFlagsCache featureFlagsCache;
         public Dictionary<ENS, Entity> PortableExperienceEntities { get; } = new ();
 
@@ -61,17 +60,20 @@ public ECSPortableExperiencesController(
                 }
             }
 
+            if (PortableExperienceEntities.ContainsKey(ens)) throw new Exception($"ENS {ens} is already loaded");
+
             string worldUrl = string.Empty;
 
             if (ens.IsValid) { worldUrl = ens.ConvertEnsToWorldUrl(); }
 
-            if (!worldUrl.IsValidUrl()) throw new ArgumentException("Invalid Spawn params. Provide a valid ENS name");
+            if (!worldUrl.IsValidUrl()) throw new ArgumentException($"Invalid Spawn params. Provide a valid ENS name {ens}");
 
             var portableExperiencePath = URLDomain.FromString(worldUrl);
             URLAddress url = portableExperiencePath.Append(new URLPath("/about"));
 
             GenericDownloadHandlerUtils.Adapter<GenericGetRequest, GenericGetArguments> genericGetRequest = webRequestController.GetAsync(new CommonArguments(url), ct, ReportCategory.REALM);
 
+            ServerAbout serverAbout = new ServerAbout();
             ServerAbout result = await genericGetRequest.OverwriteFromJsonAsync(serverAbout, WRJsonParser.Unity);
 
             if (result.configurations.scenesUrn.Count == 0)
@@ -90,9 +92,11 @@ public ECSPortableExperiencesController(
                 portableExperiencePath.Value
             );
 
+
             ISceneFacade parentScene = scenesCache.Scenes.FirstOrDefault(s => s.SceneStateProvider.IsCurrent);
             string parentSceneName = parentScene != null ? parentScene.Info.Name : "main";
             Entity portableExperienceEntity = globalWorld.Create(new PortableExperienceRealmComponent(realmData, parentSceneName, isGlobalPortableExperience), new PortableExperienceComponent(ens));
+
             PortableExperienceEntities.Add(ens, portableExperienceEntity);
 
             return new IPortableExperiencesController.SpawnResponse