I was getting the error: The attachable property ‘Behaviors’ was not found in type ‘Interaction’.

This was generated by a missing reference to the "System.Windows.Interactivity" assembly.


You can download the assembly at http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=3062

It is contained in the BlendSLSDK_en.msi

You can extract the msi package without installing it, by using msiexec.


Just place the *.msi in C:\Temp and run:

msiexec /a C:\Temp\BlendSLSDK_en.msi TARGETDIR="C:\Temp\Blend" /qn

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