An exception was thrown

[oleksii-frolov]

I am not sure hot to reproduce that but we have these details.
Log

20150615-154242T-07 - webOS Socket [OUT]: {"type":"request","id":"53","uri":"ssap://webapp/launchWebApp","payload":{"webAppId":"MediaPlayer"}}
20150615-154242T-07 - webOS Socket [IN] : {"type":"response","id":"53","payload":{"returnValue":true,"sessionId":"Y29tLndlYm9zLmFwcC53ZWJhcHBob3N0OnVuZGVmaW5lZA=="}}
20150615-154242T-07 - Found requests. Need to handle response.
20150615-154242T-07 - webOS Socket [OUT]: {"type":"subscribe","id":"55","uri":"ssap://webapp/connectToApp","payload":{"webAppId":"MediaPlayer"}}
20150615-154242T-07 - webOS Socket [IN] : {"type":"error","id":"55","error":"500 Application error","payload":{"returnValue":false,"errorCode":-1000,"errorText":"Already connected or connecting to this app channel"}}
20150615-154242T-07 - Error payload: Windows.Data.Json.JsonObject
20150615-154242T-07 - Error desc:  Application error
20150615-154242T-07 - webOS Socket [OUT]: {"type":"unsubscribe","id":"55"}
A first chance exception of type 'System.Exception' occurred in ConnectSdk.Demo.Windows.exe
A first chance exception of type 'System.Exception' occurred in ConnectSdk.Windows.DLL

Exception details:

System.Exception was unhandled by user code
  HResult=-2147023728
  Message=Element not found. (Exception from HRESULT: 0x80070490)
  Source=Windows.UI
  StackTrace:
       at Windows.UI.Popups.MessageDialog.ShowAsync()
       at ConnectSdk.Demo.Demo.Model.<PlayMediaCommandxecute>b__1d(ServiceCommandError serviceCommandError)
       at ConnectSdk.Windows.Service.Capability.Listeners.ResponseListener.OnError(ServiceCommandError obj)
       at ConnectSdk.Windows.Core.Util.PostError(ResponseListener listener, ServiceCommandError error)
       at ConnectSdk.Windows.Service.Sessions.WebOsWebAppSession.<>c__DisplayClass40.<PlayMedia>b__3e(ServiceCommandError serviceCommandError)
       at ConnectSdk.Windows.Service.Capability.Listeners.ResponseListener.OnError(ServiceCommandError obj)
       at ConnectSdk.Windows.Service.Sessions.WebOsWebAppSession.<>c__DisplayClassb.<SendP2PMessage>b__8(ServiceCommandError serviceCommandError)
       at ConnectSdk.Windows.Service.Capability.Listeners.ResponseListener.OnError(ServiceCommandError obj)
       at ConnectSdk.Windows.Service.Sessions.WebOsWebAppSession.<>c__DisplayClass5.<Connect>b__3(ServiceCommandError serviceCommandError)
       at ConnectSdk.Windows.Service.Capability.Listeners.ResponseListener.OnError(ServiceCommandError obj)
       at ConnectSdk.Windows.Core.Util.PostError(ResponseListener listener, ServiceCommandError error)
       at ConnectSdk.Windows.Service.WebOstvService.<>c__DisplayClass8c.<ConnectToWebApp>b__8b(ServiceCommandError serviceCommandError)
       at ConnectSdk.Windows.Service.Capability.Listeners.ResponseListener.OnError(ServiceCommandError obj)
       at ConnectSdk.Windows.Core.Util.PostError(ResponseListener listener, ServiceCommandError error)
       at ConnectSdk.Windows.Service.WebOs.WebOstvServiceSocketClient.HandleConnectionLost(Boolean cleanDisconnect, Exception ex)
       at ConnectSdk.Windows.Service.WebOs.WebOstvServiceSocketClient.OnClose(Int32 code, String reason)
       at ConnectSdk.Windows.Service.WebOs.WebOstvServiceSocketClient.<CreateSocket>b__1(IWebSocket sender, WebSocketClosedEventArgs args)
  InnerException: 

[sdaemon]

what device was it?

[oleksii-frolov]

It was Nokia Lumia 620 connected to LG TV with WebOS. Probably we turned off the TV when the app was connected and after that it happened.