Small fixes.

src/Squidex.Domain.Apps.Read/State/Grains/AppStateGrain.cs

@@ -46,7 +46,10 @@ namespace Squidex.Domain.Apps.Read.State.Grains
             catch (Exception ex)
             {
                 exception = ex;
+            }
 
+            if (state == null)
+            {
                 state = new AppStateGrainState();
             }
 

src/Squidex.Domain.Apps.Read/State/Grains/AppUserGrain.cs

@@ -17,22 +17,15 @@ namespace Squidex.Domain.Apps.Read.State.Grains
     public sealed class AppUserGrain : IStatefulObject
     {
         private IPersistence<AppUserGrainState> persistence;
-        private AppUserGrainState state;
+        private AppUserGrainState state = new AppUserGrainState();
 
         public Task ActivateAsync(string key, IStore store)
         {
-            persistence = store.WithSnapshots<AppUserGrain, AppUserGrainState>(key, ApplySnapShot);
+            persistence = store.WithSnapshots<AppUserGrain, AppUserGrainState>(key, s => state = s);
 
             return persistence.ReadAsync();
         }
 
-        public Task ApplySnapShot(AppUserGrainState state)
-        {
-            this.state = state;
-
-            return TaskHelper.Done;
-        }
-
         public Task AddAppAsync(string appName)
         {
             state = state.AddApp(appName);

src/Squidex.Infrastructure/EventSourcing/Grains/EventConsumerGrain.cs

@@ -24,7 +24,7 @@ namespace Squidex.Infrastructure.EventSourcing.Grains
         private IEventSubscription currentSubscription;
         private IEventConsumer eventConsumer;
         private IPersistence<EventConsumerState> persistence;
-        private EventConsumerState state;
+        private EventConsumerState state = new EventConsumerState();
 
         public EventConsumerGrain(
             IEventStore eventStore,

src/Squidex.Infrastructure/States/Persistence.cs

@@ -59,7 +59,7 @@ namespace Squidex.Infrastructure.States
                 positionSnapshot = position;
                 positionEvent = position;
 
-                if (applyState != null)
+                if (applyState != null && position >= 0)
                 {
                     await applyState(state);
                 }

src/Squidex/Config/Domain/InfrastructureServices.cs

@@ -19,6 +19,7 @@ using Squidex.Infrastructure.Assets.ImageSharp;
 using Squidex.Infrastructure.Commands;
 using Squidex.Infrastructure.EventSourcing;
 using Squidex.Infrastructure.Log;
+using Squidex.Infrastructure.States;
 using Squidex.Infrastructure.UsageTracking;
 using Squidex.Pipeline;
 
@@ -76,12 +77,6 @@ namespace Squidex.Config.Domain
             services.AddSingletonAs<ActionContextAccessor>()
                 .As<IActionContextAccessor>();
 
-            services.AddSingletonAs<DefaultDomainObjectRepository>()
-                .As<IDomainObjectRepository>();
-
-            services.AddSingletonAs<DefaultDomainObjectFactory>()
-                .As<IDomainObjectFactory>();
-
             services.AddSingletonAs<AggregateHandler>()
                 .As<IAggregateHandler>();
 
@@ -94,7 +89,8 @@ namespace Squidex.Config.Domain
             services.AddSingletonAs<ImageSharpAssetThumbnailGenerator>()
                 .As<IAssetThumbnailGenerator>();
 
-            services.AddSingletonAs<EventDataFormatter>();
+            services.AddSingletonAs<JsonEventDataFormatter>()
+                .As<IEventDataFormatter>();
         }
     }
 }