Version 3.1.1106.0
here is the error
"Impossible d'effectuer un cast d'un objet de type 'Aspose.Network.Ftp.TransferProgressEventHandler' en type 'Aspose.Network.Ftp.xcd91c605b415930e'."
à Aspose.Network.Ftp.FtpClient.xcd91c605b415930e(IAsyncResult x0815c1aba71fc4e3)
à System.Runtime.Remoting.Messaging.AsyncResult.SyncProcessMessage(IMessage msg)
à System.Runtime.Remoting.Messaging.StackBuilderSink.AsyncProcessMessage(IMessage msg, IMessageSink replySink)
à System.Runtime.Remoting.Proxies.AgileAsyncWorkerItem.ThreadPoolCallBack(Object o)
à System.Threading._ThreadPoolWaitCallback.WaitCallback_Context(Object state)
à System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
à System.Threading._ThreadPoolWaitCallback.PerformWaitCallback(Object state)