diff --git a/TLSharp.Core/Network/MtProtoSender.cs b/TLSharp.Core/Network/MtProtoSender.cs
index 37a57fd..e81b5da 100644
--- a/TLSharp.Core/Network/MtProtoSender.cs
+++ b/TLSharp.Core/Network/MtProtoSender.cs
@@ -330,6 +330,7 @@ namespace TLSharp.Core.Network
             { // rpc_error
                 int errorCode = messageReader.ReadInt32();
                 string errorMessage = Serializers.String.read(messageReader);
+                Console.Error.WriteLine($"ERROR: {errorMessage} - {errorCode}");
 
                 if (errorMessage.StartsWith("FLOOD_WAIT_"))
                 {
diff --git a/TLSharp.Core/TelegramClient.cs b/TLSharp.Core/TelegramClient.cs
index fa0414b..641f8d4 100644
--- a/TLSharp.Core/TelegramClient.cs
+++ b/TLSharp.Core/TelegramClient.cs
@@ -113,9 +113,17 @@ namespace TLSharp.Core
             }
         }
 
+        public async Task MainLoopAsync()
+        {
+            for (;;)
+            {
+                await WaitEventAsync();
+            }
+        }
+
         private void _sender_UpdatesEvent (TLAbsUpdates updates)
         {
-            Updates (this, updates);
+            Updates?.Invoke (this, updates);
         }
 
         private async Task RequestWithDcMigration(TLMethod request)