I haven't had this issue before. It began as soon as I updated to the latest version of Visual Studio 2015 and updated to the latest release of the WPF Controls.
Here is a style I have created for the GridView.
Every single Setter throws the following error (with the exception of 'GroupRenderMode' and 'ScrollViewer.VerticalScrollBarVisibility'):
The property "[PropertyName]" is not a DependencyProperty. To be used in markup, non-attached properties must be exposed on the target type with an accessible instance property "[PropertyName]". For attached properties, the declaring type must provide static "Get[PropertyName]" and "Set[PropertyName]" methods.
Anyone having similar issues?