diff --git a/ChatController/ChatMainControl.xaml.cs b/ChatController/ChatMainControl.xaml.cs
index d6d5fef..01eab05 100644
--- a/ChatController/ChatMainControl.xaml.cs
+++ b/ChatController/ChatMainControl.xaml.cs
@@ -263,6 +263,7 @@ namespace ChatController
 
             _ContactList = new ObservableSortCollection<ContactDependencyObject>();
 
+            // ToDo: Hier tritt eine NullPointer-Exception auf!
             foreach(var contact in Chat.AddContacts())
             {
                 ContactList.Add(new ContactDependencyObject(contact));
diff --git a/ChatController/HauptKlassen/Login.cs b/ChatController/HauptKlassen/Login.cs
index f37885b..7269e36 100644
--- a/ChatController/HauptKlassen/Login.cs
+++ b/ChatController/HauptKlassen/Login.cs
@@ -522,6 +522,7 @@ namespace ChatController.HauptKlassen
 
             client.ExecuteAsync(request, response =>
             {
+                Debug.WriteLine("+++>Maximale Dateigröße erhalten");
                 var maxFileSizeAnonymous = JsonConvert.DeserializeAnonymousType(response.Content, new { file_upload_max_size = string.Empty });
 
                 var maxUploadFileSize = Convert.ToInt64(maxFileSizeAnonymous.file_upload_max_size);