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c#wpfvisual-studioblend

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

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

Solution

    1. Run Command Prompt as Administrator

    2. Change Directory to Blend SDK: cd C:\Program Files (x86)\Microsoft SDKs\Expression\Blend\.NETFramework\v4.5\Libraries\

    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