Dlna: Error reporting progress

[Smaky 131]

I am seeing quite a few of these in my logs. What does this error means?

2014-07-31 21:13:55.1687 Error - Dlna: Error reporting progress
Guid should contain 32 digits with 4 dashes (xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx).
System.FormatException
  at System.Guid.GuidResult.SetFailure(ParseFailureKind failure, String failureMessageID, Object failureMessageFormatArgument, String failureArgumentName, Exception innerException)
  at System.Guid.TryParseGuidWithDashes(String guidString, GuidResult& result)
  at System.Guid.TryParseGuid(String g, GuidStyles flags, GuidResult& result)
  at System.Guid..ctor(String g)
  at MediaBrowser.Server.Implementations.Session.SessionManager.<OnPlaybackProgress>d__37.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
  at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
  at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
  at MediaBrowser.Dlna.PlayTo.PlayToController.<_device_PlaybackProgress>d__16.MoveNext()

 

[jhoff80 94]

I'm curious if one of your DLNA devices is an Xbox One.  I just posted in the Xbox One thread that this is exactly what happens when I switch apps or put the console into standby mode before a video has finished playing.