11:50:00 merma@phnx [CalDAV / CardDAV] MailClient.Accounts.ConnectionException: The format of value '"gcs00000001"' is invalid.

          ---> System.FormatException: The format of value '"gcs00000001"' is invalid.

            at System.Net.Http.Headers.HttpHeaderParser.ParseValue(String value, Object storeValue, Int32& index)

            at System.Net.Http.Headers.HttpHeaders.ParseAndAddValue(HeaderDescriptor descriptor, HeaderStoreItemInfo info, String value)

            at System.Net.Http.Headers.HttpHeaders.Add(HeaderDescriptor descriptor, String value)

            at System.Net.Http.Headers.HttpHeaders.Add(String name, String value)

            at MailClient.Protocols.CalDav.ProtocolCommands.PutCommand.Prepare(HttpRequestMessage request)

            at MailClient.Protocols.CalDav.ProtocolCommands.Connector.RunCommand(CalDavAccount account, ICommand command, CancellationToken cancellationToken)

            --- End of inner exception stack trace ---

            at MailClient.Protocols.CalDav.ProtocolCommands.Connector.RunCommand(CalDavAccount account, ICommand command, CancellationToken cancellationToken)

            at MailClient.Protocols.CalDav.Synchronizer.UploadCommand`1.DoUpload(Uri selectPath, TStorageItem item, Boolean overwrite)

            at MailClient.Protocols.CalDav.Synchronizer.UploadCommand`1.Execute(WorkerStatus status)

            at MailClient.Commands.Command.Process(WorkerStatus status)

           EnqueuedStackTrace =

                at MailClient.Storage.Application.Item`2.EndUpdate()

                at MailClient.Storage.Application.Schedule.ScheduleItem`1.EndUpdate()

                at MailClient.UI.Forms.formEvent.SaveDataToEventWithDescription(String innerHtmlText, String innerDocumentHtml, Action`1 onSuccess, Boolean saveToFolder, EventItem& evnt)

                at MailClient.UI.Forms.formEvent.<>c__DisplayClass62_1.<SaveDataToEvent>b__1(String innerDocumentHtml)

                at MailClient.Common.UI.Controls.CefWebBrowserEx.CefWebBrowserEx.<>c__DisplayClass209_0.<GetCleanedDocumentHtml>b__0(CefProcessMessage message)

                at MailClient.Common.UI.Controls.CefWebBrowserEx.CefWebBrowserEx.<>c__DisplayClass231_0.<EvaluateJavaScript>b__0(CefProcessMessage message, CefFrame f)

                at MailClient.Common.UI.Controls.CefWebBrowserEx.CefWebBrowserEx.OnMessageReceived(CefProcessMessage message)

                at MailClient.Common.UI.Controls.CefWebBrowserEx.CefWebClientEx.OnProcessMessageReceived(CefBrowser browser, CefProcessId sourceProcess, CefProcessMessage message)

                at Xilium.CefGlue.CefClient.on_process_message_received(cef_client_t* self, cef_browser_t* browser, CefProcessId source_process, cef_process_message_t* message)

                at Interop.User32.DispatchMessageW(MSG& msg)

                at System.Windows.Forms.Application.ComponentManager.Interop.Mso.IMsoComponentManager.FPushMessageLoop(UIntPtr dwComponentID, msoloop uReason, Void* pvLoopData)

                at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(msoloop reason, ApplicationContext context)

                at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(msoloop reason, ApplicationContext context)

               at System.Windows.Forms.Application.Run(ApplicationContext context)

                at MailClient.Program.<>c.<Main>b__169_1()

                at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor, Boolean wrapExceptions)

                at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)

                at System.Delegate.DynamicInvokeImpl(Object[] args)

                at System.Delegate.DynamicInvoke(Object[] args)

                at System.Windows.Forms.Control.InvokeMarshaledCallbackDo(ThreadMethodEntry tme)

                at System.Windows.Forms.Control.InvokeMarshaledCallbackHelper(Object obj)

                at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)

                at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)

                at System.Windows.Forms.Control.InvokeMarshaledCallback(ThreadMethodEntry tme)

                at System.Windows.Forms.Control.InvokeMarshaledCallbacks()

                at System.Windows.Forms.Control.WndProc(Message& m)

                at System.Windows.Forms.ScrollableControl.WndProc(Message& m)

                at System.Windows.Forms.ContainerControl.WndProc(Message& m)

                at System.Windows.Forms.Form.WndProc(Message& m)

                at MailClient.Common.UI.Forms.BaseForm.WndProc(Message& m)

                at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)

                at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)

                at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, WM msg, IntPtr wparam, IntPtr lparam)

                at Xilium.CefGlue.Interop.libcef.run_message_loop()

                at MailClient.Program.Main(String[] args)

           GUIStatus_Exception_Reported = True