Declined:

After further investigation this issue is related to a know timing issue in the WPF platform which is why the issues status is being set as "Declined". More information can be found in the official social MSDN forums here: http://social.msdn.microsoft.com/Forums/vstudio/en-US/564e7160-df70-4e95-945d-60954dd7a2ae/wpf-binding-errors-systemwindowsdata-error-4?forum=wpf

Such issues should be ignored as they are timing issues in the WPF platform itself and are not critical for runtime. If you would like not to see them in the output after building your project you could use the following workaround:
- In your project's code behind set the DataBindingSource.Switch.Level to Critical. The next code snippet shows the described workaround:
System.Diagnostics.PresentationTraceSources.DataBindingSource.Switch.Level = System.Diagnostics.SourceLevels.Critical;