c# - the type from assembly is built with an older version of blend sdk and is not supported in a windows presentation foundation 4 project

Question

I created a WPF project in VS 2013. After upgrading to VS 2015, this error showed in the designer on types derived from the Blend SDK:

the type from assembly is built with an older version of blend sdk and is not supported in a windows presentation foundation 4 project

Answer 1

1. Run Command Prompt as Administrator

2. Change Directory to Blend SDK: cd C:Program Files (x86)Microsoft SDKsExpressionBlend.NETFrameworkv4.5Libraries

3. Register DLL: gacutil -i System.Windows.Interactivity.dll

4. Restart Visual Studio

Reference: https://connect.microsoft.com/VisualStudio/feedback/details/755407/xaml-designer-will-not-display-when-using-blend-sdk-behaviors