How to solve conflict of VisualStateManager both in PresentationFramework and WPFToolkit ?

Feb 9, 2015 at 1:10 AM
The type 'System.Windows.VisualStateManager' exists in both 'C:\Program Files (x86)\WPF Toolkit\v3.5.50211.1\WPFToolkit.dll' and 'C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework.NETFramework\v4.5\PresentationFramework.dll'